View allAll Photos Tagged exothermic
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
A group of Marine Iguanas on Santa Cruz
Marine Iguana
The Marine Iguana (Amblyrhynchus cristatus) is an iguana found only on the Galapagos Islands that has the ability, unique among modern lizards, to live and forage in the sea. It has spread to all the islands in the archipelago, and is sometimes called the Galapagos Marine Iguana. It mainly lives on the rocky Galapagos shore, but can also be spotted in marshes and mangrove beaches. On his visit to the islands, Charles Darwin was revolted by the animals' appearance, writing “The black Lava rocks on the beach are frequented by large (2-3 ft), disgusting clumsy Lizards. They are as black as the porous rocks over which they crawl & seek their prey from the Sea. I call them 'imps of darkness'. They assuredly well become the land they inhabit.” In fact, Amblyrhynchus cristatus is not always black; the young have a lighter coloured dorsal stripe, and some adult specimens are grey. The reason for the sombre tones is that the species must rapidly absorb heat to minimize the period of lethargy after emerging from the water. They feed almost exclusively on marine algae, expelling the excess salt from nasal glands while basking in the sun, and the coating of salt can make their faces appear white. In adult males, coloration varies with the season. Breeding-season adult males on the southern islands are the most colorful and will acquire reddish and teal-green colors, while on Santa Cruz they are brick red and black, and on Fernandina they are brick red and dull greenish. Another difference between the iguanas is size, which is different depending on the island the individual iguana inhabits. The iguanas living on the islands of Fernandina and Isabela (named for the famous rulers of Spain) are the largest found anywhere in the Galápagos. On the other end of the spectrum, the smallest iguanas are found on the island on Genovesa. Adult males are approximately 1.3 m long, females 0.6 m, males weigh up to 1.5 kg. On land, the marine iguana is rather a clumsy animal, but in the water it is a graceful swimmer, using its powerful tail to propel itself. As an exothermic animal, the marine iguana can spend only a limited time in the cold sea, where it dives for algae. However, by swimming only in the shallow waters around the island they are able to survive single dives of up to half an hour at depths of more than 15 m. After these dives, they return to their territory to bask in the sun and warm up again. When cold, the iguana is unable to move effectively, making them vulnerable to predation, so they become highly aggressive before heating up (since they are unable to run away they try to bite attackers in this state). During the breeding season, males become highly territorial. The males assemble large groups of females to mate with, and guard them against other male iguanas. However, at other times the species is only aggressive when cold. Marine iguanas have also been found to change their size to adapt to varying food conditions. During El Niño conditions when the algae that the iguanas feed on was scarce for a period of two years, some were found to decrease their length by as much as 20%. When food conditions returned to normal, the iguanas returned to their pre-famine size. It is speculated that the bones of the iguanas actually shorten as a shrinkage of connective tissue could only account for a 10% length change. Researchers theorize that land and marine iguanas evolved from a common ancestor since arriving on the islands from South America, presumably by driftwood. It is thought that the ancestral species inhabited a part of the volcanic archipelago that is now submerged. A second school of thought holds that the Marine iguana may have evolved from a now extinct family of seagoing reptiles. Its generic name, Amblyrhynchus, is a combination of two Greek words, Ambly- from Amblus meaning "blunt" and rhynchus meaning "snout". Its specific name is the Latin word cristatus meaning "crested," and refers to the low crest of spines along the animal's back. Amblyrhynchus is a monotypic genus in that Amblyrhynchus cristatus is the only species which belongs to it at this point in time. This species is completely protected under the laws of Ecuador. El Niño effects cause periodic declines in population, with high mortality, and the marine iguana is threatened by predation by exotic species. The total population size is unknown, but is, according to IUCN, at least 50,000, and estimates from the Charles Darwin Research Station are in the hundreds of thousands. The marine iguanas have not evolved to combat newer predators. Therefore, cats and dogs eat both the young iguanas and dogs will kill adults due to the iguanas' slow reflex times and tameness. Dogs are especially common around human settlements and can cause tremendous predation. Cats are also common in towns, but they also occur in numbers in remote areas where they take a toll on iguanas.
Santa Cruz
With the largest human population in the Galapagos archipelago, Isla Santa Cruz is the most important of the Galapagos Islands. Meaning Holy Cross in Spanish, this island is also known as Indefatigable, after the HMS Indefatigable landed here long ago. The second largest island terms of land area at 986 sq km, Isla Santa Cruz is home to the key town of Puerto Ayora, the Charles Darwin Research Station and the headquarters of the Galapagos National Park Service. With its own airport on Isla Baltra a few miles away, Isla Santa Cruz is where most visitors who come to the Galapagos Islands usually stay. With a number of bars, hotels, restaurants and shops in Puerto Ayora, most tours of the Archipelago also usually begin from here.
Galapagos Islands
The Galápagos Islands (official name: Archipiélago de Colón; other Spanish names: Islas de Colón or Islas Galápagos) are an archipelago of volcanic islands distributed around the equator in the Pacific Ocean, some 900 km west of Ecuador. It is a UNESCO World Heritage site: wildlife is its most notable feature. Because of the only very recent arrival of man the majority of the wildlife has no fear of humans and will allow visitors to walk right up them, often having to step over Iguanas or Sea Lions.The Galápagos islands and its surrounding waters are part of a province, a national park, and a biological marine reserve. The principal language on the islands is Spanish. The islands have a population of around 40,000, which is a 40-fold expansion in 50 years. The islands are geologically young and famed for their vast number of endemic species, which were studied by Charles Darwin during the voyage of the Beagle. His observations and collections contributed to the inception of Darwin's theory of evolution by natural selection.
This photo was just an afterthought after I took the Memphis skyline shot. This is where I parked to walk to the shore of the Mississippi river. I think my 14 exposure HDRs are really over doing it. This is done with 3 exposures, plus no tripod. This was hand held with a slow point and shoot camera! No fast bracketed shots, I had to stabilize my camera, take each shot, manually change the exposure compensation for the next shot, all while keeping the camera steady! (Thanks go to the Hugin alignment stack when this photo was processed.) This is a pretty realistic looking HDR shot imo.
Taken underneath the Hernando de Soto bridge.
Pregamma=1.3
Mantiuk
Contrast Mapping=0.2
Saturation Factor=1.5
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
Drs Jon Danks and Martin Clarke (with the ignition splint) demonstrate the "barking dog" experiment as part of a spectacular chemistry show put on for local primary schools.
The "barking dog" is based on an exothermic reaction between nitrogen monoxide and carbon disulphide. Ignition of the mixture in a long tube results in a bright blue chemi-luminescent flash, with a loud barking or woofing sound due to gases rushing up the tube.
Scientists at Monmouth School often carry out the experiments that quite a few schools just watch on videos! They believe in 'hands on' and the experience and knowledge of their staff make this possible.
Took this photo after the cremation of my mother, Kate Williams, symbolizes the cremation.
UNTO Almighty God we commend the soul of Kate departed, and we commit her body to the ground; earth to earth, ashes to ashes, dust to dust; in sure
and certain hope of the Resurrection unto eternal life,
through our Lord Jesus Christ; at whose coming in glorious
majesty to judge the world, the earth and the sea shall give
up their dead; and the corruptible bodies of those who
sleep in him shall be changed, and made like unto his own
glorious body; according to the mighty working whereby
he is able to subdue all things unto himself.
SOUTH CHINA SEA (Feb. 23, 2018) Damage Controlman 3rd Class Joshua Lopez strikes-on a portable exothermic cutting unit in the general workshop aboard the Arleigh Burke-Class guided-missile destroyer USS Michael Murphy (DDG 112). Michael Murphy is currently operating in the Western Pacific as part of the Carl Vinson Strike Group. (U.S. Navy photo by Mass Communication Specialist Third Class Jasen Morenogarcia/Released)
Best viewed Large or Super Huge (5.5 MB)
This is a stitch of 3 images taken at altitudes ranging between close to horizontal and close to vertical, at an azimuth of approx 198.5° about the building.
One Nashville Place in down town Nashville TN is known as the US Bank building, and the R2D2 building. Although it only is the 9th tallest building in the city, I think it is the most interesting and mysterious looking.
Stitched in Hugin.
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
U.S. Navy Diver 2nd Class Matt Wilson, right, assigned to Mobile Diving and Salvage Unit (MDSU) 2, acts as a safety observer for Cpl. Pinel Mapaquito as he uses an exothermic cutting-cable during salvage training aboard the Military Sealift Command salvage and rescue ship USNS Grasp (T-ARS 51) in Panama City, Panama, Aug. 17, 2010. MDSU-2 is participating in Navy Diver-Southern Partnership Station, a multinational partnership engagement designed to increase interoperability and partner nation capacity through diving operations. (DoD photo by Mass Communication Specialist 1st Class Jayme Pastoric, U.S. Navy/Released)
Phyrophoric reaction using Potassium Permanganate and Glycerol. This one takers between a few seconds and a minute to start. The students love it!
Chemistry and Light
Presented by: Lana Mikhaylichenko, Lecturer, Wanda Restivo, Senior Lecturer, Effie Sauer, Lecturer, Tony Adamo, TRACES Laboratory Manager, and student volunteers from the UTSC Chemistry Club (Taleen Karnieg, Cedric Hong, Moushumi DasGupta, Jolie Lam, Kristen Soogrim, Jasmine Wang)
Learn all about chemiluminescence reactions and fluorescence phenomenon, discover exothermic reactions
PACIFIC OCEAN (Feb. 14, 2017) Damage Controlman 2nd Class Brent Huffaker, a native of Garden Grove, Calif., undergoes an inspection of the Portable Exothermic Cutting Unit (PECU) on board the aircraft carrier USS Nimitz (CVN 68). Nimitz is currently undergoing the Board of Inspection and Survey (INSURV) leading up to a 2017 deployment. (U.S. Navy photo by Mass Communication Specialist Seaman Leon Wong/Released)
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
An interactive turntable/exercise bike by Angel Nevarez and Valerie Tevere. Pedal and you can listen to a record through the earphones. (Museum guests are allowed to use it, though I didn't get a chance.)
Marcasite, whose name is derived from the Arabic word for pyrite, is a common and an attractive mineral. The two minerals, marcasite and pyrite, are often confused due to their similar characteristics. Marcasite is a polymorph of pyrite which means that it has the same chemistry as pyrite but a different structure and, therefore, different symmetry and crystal shapes. The marcasite/pyrite polymorh pair is probably the most famous polymorph pair next to the diamond/graphite pair. Adding to the confusion between marcasite and pyrite is the use of the word marcasite as a jewelry trade name. The term is applied to small polished and faceted stones that are inlayed in sterling silver. But even though they are called marcasite, they are actually pyrite.
Marcasite is difficult to distinguish from pyrite when a lack of distinctive crystal habits exists. In fact, many specimens have been wrongly identified as pyrite or marcasite by even experienced mineral collectors. For many years the iron sulfide "Suns" found in Illinois coal mines were called "Marcasite Suns" (also known as "Marcasite Dollars") until X-ray studies showed them to be mostly pyrite. They have a habit that looks like marcasite. The possibility that they were originally marcasite and then later transformed into pyrite is being studied. Now they are correctly called "Pyrite Suns", but the confusion still exists. Many marcasite specimens are distinctive enough to reveal their true identity and make interesting and beautiful display specimens.
The most famous habit for marcasite is its "cock's comb" twinned habit. The crystals appear like a roster's head crest, hence the name. The habit is very distinctive and can not be mistaken for any other mineral.
Marcasite has been known to pseudomorph other minerals. A pseudomorph is an atom by atom replacement of one mineral's chemistry for another. If done subtly, the replacement can leave the old mineral's shape intact. The effect is one mineral in the shape of another, hence the term pseudomorph (Latin for false shape). Marcasite has pseudomorphed pyrite, gypsum, fluorite and others. At other times marcasite is pseudomorphed itself into the iron oxide mineral goethite. Often the replacement is only peripheral and leaves a thin skin of iron oxides on the crystals. These iron oxides are seen as an iridescence sheen and can provide marcasite specimens with quite an attractive and colorful appearance. These oxides may also have a positive effect in slowing marcasite's unfortunate deterioration.
Over a period of years, marcasite will oxidize in collections, freeing sulfur which forms sulfuric acid. The acid will then attack the paper label and even the cardboard box holding the specimen. Over a period of decades, most marcasite specimens will have disintegrated into an undesirable dust along with deteriorated paper scraps. A sulfur smell released during this reaction is often the easiest characteristic distinguishing Marcasite from Pyrite. The reaction is triggered by exposure to air and is an exothermic reaction, meaning that the reaction releases heat. This does not mean that marcasite hand specimens will feel warm to the touch, but in some marcasite rich portions of certain mines the mine walls would get too hot to touch because of this reaction. Ironically, specimens with iridescent oxide coatings have shown a resistance to deterioration and seem to survive longer than "fresh" maracasites. Either way marcasite is an interesting and attractive mineral and even with the slow deterioration can be a pleasure to own for many many years.
Marcasite can be formed as both a primary or a secondary mineral. It typically forms under low-temperature highly acidic conditions. It occurs in sedimentary rocks (shales, limestones and low grade coals) as well as in low temperature hydrothermal veins. Commonly associated minerals include pyrite, pyrrhotite, galena, sphalerite, fluorite, dolomite and calcite.[1]
As a primary mineral it forms nodules, concretions and crystals in a variety of sedimentary rock, such as at Dover, Kent, England, where it forms as sharp individual crystals and crystal groups, and nodules (similar to those shown here) in chalk.
As a secondary mineral it forms by chemical alteration of a primary mineral such as pyrrhotite or chalcopyrite.
Marcasite reacts more readily than pyrite under conditions of high humidity. The product of this disintegration is iron(II) sulfate and sulfuric acid. The hydrous iron sulfate forms a white powder consisting of the mineral melanterite, FeSO4·7H2O.[5]
This disintegration of marcasite in mineral collections is known as "pyrite decay". When a specimen goes through pyrite decay, the marcasite reacts with moisture and oxygen in the air, the sulfur oxidizing and combining with water to produce sulfuric acid that attacks other sulfide minerals and mineral labels. Low humidity (less than 60%) storage conditions prevents or slows the reaction.[6]
140805-N-TU910-153 WATERS EAST OF JAPAN (Aug. 5, 2014) Damage Controlman 2nd Class Chad Noss, from Chicago, Illinois, demonstrates the use of a portable exothermic cutting unit to family and friends of Sailors assigned to Ticonderoga-class guided-missile cruiser USS Shiloh (CG 67) during a Tiger Cruise. Shiloh is conducting a Tiger Cruise, an event that allows friends and family members of U.S. Navy Sailors to experience life underway. (U.S. Navy photo released by Mass Communication Specialist Seaman Abby Rader/Released)
141109-N-TR763-068
ARABIAN GULF (Nov. 9, 2014) Damage Controlman 2nd Class Shane Rutherford practices using a portable exothermic cutting unit in the welding booth inside the Shipfitter Shop aboard the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson is deployed in the U.S. 5th Fleet area of responsibility supporting Operation Inherent Resolve, strike operations in Iraq and Syria as directed, maritime security operations, and theater security cooperation efforts in the region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Nick Brown/Released)
ARABIAN GULF (Nov. 9, 2014) Damage Controlman 2nd Class Shane Rutherford practices using a portable exothermic cutting unit (PECU) in the welding booth inside the Shipfitter Shop aboard the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson is deployed in the U.S. 5th Fleet area of operations supporting Operation Inherent Resolve, strike operations in Iraq and Syria as directed, maritime security operations, and theater security cooperation efforts in the region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Nick Brown/Released)
ARABIAN GULF (Nov. 9, 2014) Damage Controlman 2nd Class Shane Rutherford practices using a portable exothermic cutting unit (PECU) in the welding booth inside the Shipfitter Shop aboard the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson is deployed in the U.S. 5th Fleet area of operations supporting Operation Inherent Resolve, strike operations in Iraq and Syria as directed, maritime security operations, and theater security cooperation efforts in the region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Nick Brown/Released)
Here is a lovely carpenter bee from the southeastern part of the U.S., a bit smaller than X. viginica and as far as I know nests in twigs rather and does no damage to timbers (not that X. virginica does much in the way of real structural damage). This would be a wonderful giant bee if it could grown to the size of a poodle, perhaps some genetic modification is in order, as exothermic beings they would not eat as much food as dogs and cats and have the added benefit of being vegans. The world is full of possibilities. Collected by the fantastic Sabrie Breland in South Georgia Flatwoods. Photography by...Brooke Alexander.
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All photographs are public domain, feel free to download and use as you wish.
Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200
The grass so little has to do,
A sphere of simple green,
With only butterflies to brood,
And bees to entertain,
- Emily Dickinson
Want some Useful Links to the Techniques We Use? Well now here you go Citizen:
Basic USGSBIML set up:
www.youtube.com/watch?v=S-_yvIsucOY
USGSBIML Photoshopping Technique: Note that we now have added using the burn tool at 50% opacity set to shadows to clean up the halos that bleed into the black background from "hot" color sections of the picture.
www.youtube.com/watch?v=Bdmx_8zqvN4
PDF of Basic USGSBIML Photography Set Up:
ftp://ftpext.usgs.gov/pub/er/md/laurel/Droege/How%20to%20Take%20MacroPhotographs%20of%20Insects%20BIML%20Lab2.pdf
Google Hangout Demonstration of Techniques:
plus.google.com/events/c5569losvskrv2nu606ltof8odo
or
www.youtube.com/watch?v=4c15neFttoU
Excellent Technical Form on Stacking:
Contact information:
Sam Droege
sdroege@usgs.gov
301 497 5840
120424-N-RC246-048
SAN DIEGO (April 24, 2012) – Damage Controlman Fireman Tiffany Williams, of the aircraft carrier USS Nimitz (CVN 68), cuts through a steel plate with a portable exothermic cutting unit (PECU) during a quarterly check of the unit. The PECU is used to cut through steel in emergency situations that require quick access to a blocked compartment on board the ship. Nimitz recently arrived to Naval Air Station North Island, San Diego to embark Carrier Air Wing 11 in preparation for flight deck certification. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Ryan J. Mayes/RELEASED)
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
PHILIPPINE SEA (Feb. 24, 2022) Damage Controlman Fireman Pedro Lozano, from San Diego, inspects a portable exothermic cutting unit (PECU) in a repair locker aboard Nimitz-class aircraft carrier USS Abraham Lincoln (CVN 72). Abraham Lincoln Strike Group is on a scheduled deployment in U.S. 7th Fleet to enhance interoperability through alliances and partnerships while serving as a ready-response force in support of a free and open Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Jett Morgan)
Back in the days before 'political correctness', that is what this experiment was known as!! Now we have to call it 'sugar snake', lol!
For the animated version, see here
Combustion or burning is a complex sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames.
one done, one more to go
Wipe off any excess sealer then buff with a clean, dry cloth and leave this to dry for about four to six hours.
Copyright © 2010 Tomitheos Photography - All Rights Reserved
flickr today
120424-N-RC246-058
SAN DIEGO (April 24, 2012) – Damage Controlman Fireman Tiffany Williams, of the aircraft carrier USS Nimitz (CVN 68), cuts through a steel plate with a portable exothermic cutting unit (PECU) during a quarterly check of the unit. The PECU is used to cut through steel in emergency situations that require quick access to a blocked compartment onboard the ship. Nimitz recently arrived to Naval Air Station North Island, San Diego to embark Carrier Air Wing 11 in preparation for flight deck certification. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Ryan J. Mayes/RELEASED)
120424-N-RC246-055
SAN DIEGO (April 24, 2012) – Damage Controlman Fireman Tiffany Williams, of the aircraft carrier USS Nimitz (CVN 68), cuts through a steel plate with a portable exothermic cutting unit (PECU) during a quarterly check of the unit. The PECU is used to cut through steel in emergency situations that require quick access to a blocked compartment onboard the ship. Nimitz recently arrived to Naval Air Station North Island, San Diego to embark Carrier Air Wing 11 in preparation for flight deck certification. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Ryan J. Mayes/RELEASED)
Wait for the sealer to dry for about four to six hours before applying a second coat then leave this to dry for another few hours or overnight.
Copyright © 2010 Tomitheos Photography - All Rights Reserved
flickr today
SOUTH CHINA SEA (April 27, 2020) Damage Controlman 3rd Class Christopher Bilbo, assigned to the Independence-variant littoral combat ship USS Gabrielle Giffords (LCS 10), tests the portable exothermic cutting unit on the ship's flight deck, April 27, 2020. Gabrielle Giffords, part of Destroyer Squadron Seven, is on a rotational deployment, operating in the U.S. 7th Fleet area of operations to enhance interoperability with partners and serve as a ready-response force. (U.S. Navy photo by Mass Communication Specialist 2nd Class Brenton Poyser)
120424-N-RC246-063
SAN DIEGO (April 24, 2012) – Damage Controlman Fireman Tiffany Williams, of the aircraft carrier USS Nimitz (CVN 68), cuts through a steel plate with a portable exothermic cutting unit (PECU) during a quarterly check of the unit. The PECU is used to cut through steel in emergency situations that require quick access to a blocked compartment onboard the ship. Nimitz recently arrived to Naval Air Station North Island, San Diego to embark Carrier Air Wing 11 in preparation for flight deck certification. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Ryan J. Mayes/RELEASED)
Drs Jon Danks and Martin Clarke of Monmouth School's Chemistry Department demonstrate the powerful exothermic reaction between hydrogen and oxygen. A mix of the two gases is inside the balloon, which Martin ignites. Martin recoils from the blast wave that hits him. This was part of a spectacular chemistry show put on for local primary schools.
Scientists at Monmouth School often carry out the experiments that quite a few schools just watch on videos! They believe in 'hands on' and the experience and knowledge of their staff make this possible.
Audiences will be amazed in this event as they experience the effects of very hot and very cold temperatures and what affects they can create with our friend Eggbert and in a show-stopping exothermic reaction. Volunteers will get to see matter transform from one state to another by tasting a fizzing Mad Science “burp” potion, and taking a Mad Science bubble bath and shower. They will also be in a scary movie scene using dry ice special effects!
120424-N-RC246-056
SAN DIEGO (April 24, 2012) – Damage Controlman Fireman Tiffany Williams, of the aircraft carrier USS Nimitz (CVN 68), cuts through a steel plate with a portable exothermic cutting unit (PECU) during a quarterly check of the unit. The PECU is used to cut through steel in emergency situations that require quick access to a blocked compartment onboard the ship. Nimitz recently arrived to Naval Air Station North Island, San Diego to embark Carrier Air Wing 11 in preparation for flight deck certification. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Ryan J. Mayes/RELEASED)
A flame (from Latin flamma), is the visible (light-emitting) gaseous part of a fire. It is caused by a highly exothermic reaction (for example, combustion, a self-sustaining oxidation reaction) taking place in a thin zone.[1] If a fire is hot enough to ionize the gaseous components, it can become a plasma.[2]
Color and temperature of a flame are dependent on the type of fuel involved in the combustion, as, for example, when a lighter is held to a candle. The applied heat causes the fuel molecules in the wick to vaporize. In this state they can then readily react with oxygen in the air, which gives off enough heat in the subsequent exothermic reaction to vaporize yet more fuel, thus sustaining a consistent flame. The high temperature of the flame tears apart the vaporized fuel molecules, forming various incomplete combustion products and free radicals, and these products then react with each other and with the oxidizer involved in the reaction. Sufficient energy in the flame will excite the electrons in some of the transient reaction intermediates such as CH and C2, which results in the emission of visible light as these substances release their excess energy (see spectrum below for an explanation of which specific radical species produce which specific colors). As the combustion temperature of a flame increases (if the flame contains small particles of unburnt carbon or other material), so does the average energy of the electromagnetic radiation given off by the flame (see blackbody).
Other oxidizers besides oxygen can be used to produce a flame. Hydrogen burning in chlorine produces a flame and in the process emits gaseous hydrogen chloride (HCl) as the combustion product.[3] Another of many possible chemical combinations is hydrazine and nitrogen tetroxide which is hypergolic and commonly used in rocket engines.
The chemical kinetics occurring in the flame is very complex and involves typically a large number of chemical reactions and intermediate species, most of them radicals. For instance, a well-known chemical kinetics scheme, GRI-Mech,[4] uses 53 species and 325 elementary reactions to describe combustion of natural gas.
There are different methods of distributing the required components of combustion to a flame. In a diffusion flame, oxygen and fuel diffuse into each other; where they meet the flame occurs. In a premixed flame, the oxygen and fuel are premixed beforehand, which results in a different type of flame. Candle flames (a diffusion flame) operate through evaporation of the fuel which rises in a laminar flow of hot gas which then mixes with surrounding oxygen and combusts.
(so, I had nothing to say, so I just copied a bit from good ol' Wiki)
Whoo hoo the top is done done done! This is as far back as I could get. Scrappy triple hourglass blocks, and some trumpet blocks, in addition to star blocks on the sides. Love it.
The quilt is called Exothermic Wonders, and is my largest most pieced quilt I've made.
Scenes from COSI's K-6 science outreach program, "It's Simply Chemistry." Students join the COSI Detective (here COSI's Becca Kelly) and use chemistry to help solve a mystery.
Elementary school students create endothermic and exothermic reactions, make super slime to take home, experience a chemical reaction that produces light without heat, and more.
"It's Simply Chemistry" is one of six COSI On Wheels programs that travel throughout Ohio and neighboring states.
COSI is Columbus, Ohio's dynamic Center of Science and Industry. For more information, please visit www.cosi.org.
"It's Simply Chemistry" Supporting Sponsor: Ashland
This is what happens when lighter gas meets spark and I'm there prepared to photograph it. You can see the flame forming ... can't you?
The Joy Of The Mundane says:
Damn, man. That's phenomenal. Way to go!
Man, this was so funny when you thought i really got all of these into explore, i remember i had to send you a message saying it was an april fools joke. You made your own and tried to trick more people too. It was funny.
www.flickr.com/photos/mundane_joy/3404507149/
1. antiparticle, 2. quantum mechanical zero-point energy, 3. positron emission, 4. euclidean space, 5. clairvoyance, 6. polynomial equations, 7. crystalline 2.0, 8. Icarus,
9. hypothetical topological feature of spacetime, 10. scalar absolute value, 11. PSR 1913+16, 12. 7/365, 13. 5/365, 14. oncology, 15. electromagnetic arc, 16. euclidean geometry,
17. fire works., 18. crystalline, 19. instinctive spell, 20. aerodynamic center, 21. relativistic heavy ion collider, 22. PSR 1913+16 v2.0, 23. subnormal numbers, 24. 17/365,
25. spacetime curvature, 26. centrifugal force, 27. the arsenal grows, 28. thucydides, 29. incompatible elements, 30. 0°c, 31. 25/365, 32. 22/365,
33. ammunition, 34. multiplicative inverse, 35. pupil, 36. insider trading, 37. substance, 38. biochemical warfare, 39. ampersand, 40. LOCC quantum channel Φ,
41. synchrotron light, 42. awe inspiring, 43. hygroscopic particles, 44. axiomatic system, 45. excessive magnetic pressure, 46. thermal runaway, 47. xylene, 48. 10/365,
49. orbital elements, 50. atmospheric drag, 51. pineapple punch, 52. nomenclature, 53. nucleosynthesis, 54. positron emission tomography, 55. spellbound, 56. precise probability of specific eventualities,
57. 2/365, 58. picofarad capacitor, 59. kittsondale, 60. familiar places, 61. 6/365, 62. gamma ray photons, 63. ionized by high voltage, 64. interstellar medium,
65. algebraic structure, 66. combustion of hydrocarbons, 67. γαλαξίας, 68. exothermic chemical reaction, 69. breakthrough, 70. transcendental functions, 71. path integral formulation, 72. antikythera mechanism
Created with fd's Flickr Toys.
Inside the Lyric Theatre in the Theater district of downtown Birmingham AL. The Lyric was opened in 1914 and has been closed since 1958 and left in much disrepair. There are currently plans to renovate it.
This is just the initial conglomeration , I am going to create some better looking ones from this batch soon. This is enfused from 27 exposures (3 per section). I had to resize this from the 16000x15000 file. The initial TIFF that came out of the process was over 1GB, and there were 12GB of intermediate files! I set the Hugin process to run and create one enfused panorama and one HDR panorama. 16 hours later, the enfused image had been created and but it was still working on the HDR when I had enough. With vast size of these project files I'm having trouble figuring out how to go about processing these. I obviously missed some large sections that I should have shot in order to make this less fractured.
Emory's holding the plinth- it's a leftover bit of refractory that the crucible sits on. Plinths let the crucible base stay out of the direct flame of the burner, and float up when metal spills, so it'll go down the drainhole instead of making a giant ingot in the furnace.
Here is a lovely carpenter bee from the southeastern part of the U.S., a bit smaller than X. viginica and as far as I know nests in twigs rather and does no damage to timbers (not that X. virginica does much in the way of real structural damage). This would be a wonderful giant bee if it could grown to the size of a poodle, perhaps some genetic modification is in order, as exothermic beings they would not eat as much food as dogs and cats and have the added benefit of being vegans. The world is full of possibilities. Collected by the fantastic Sabrie Breland in South Georgia Flatwoods. Photography by...Brooke Alexander.
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All photographs are public domain, feel free to download and use as you wish.
Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200
The grass so little has to do,
A sphere of simple green,
With only butterflies to brood,
And bees to entertain,
- Emily Dickinson
Want some Useful Links to the Techniques We Use? Well now here you go Citizen:
Basic USGSBIML set up:
www.youtube.com/watch?v=S-_yvIsucOY
USGSBIML Photoshopping Technique: Note that we now have added using the burn tool at 50% opacity set to shadows to clean up the halos that bleed into the black background from "hot" color sections of the picture.
www.youtube.com/watch?v=Bdmx_8zqvN4
PDF of Basic USGSBIML Photography Set Up:
ftp://ftpext.usgs.gov/pub/er/md/laurel/Droege/How%20to%20Take%20MacroPhotographs%20of%20Insects%20BIML%20Lab2.pdf
Google Hangout Demonstration of Techniques:
plus.google.com/events/c5569losvskrv2nu606ltof8odo
or
www.youtube.com/watch?v=4c15neFttoU
Excellent Technical Form on Stacking:
Contact information:
Sam Droege
sdroege@usgs.gov
301 497 5840