Quantum Physics
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My husband shot this patient—or scared-witless—Pacific tree frog using his Nikkor 200mm macro lens and his old Nikon D4.
Same position but different angle than mine—in first comment.
There's room in the world for many different styles and apertures, and Howard and I are at either end of the spectrum. He's an IT Doc and physics guy, and has little close-sighted vision. We make a perfect pair, united in admiration of this tiny frog. Howard took this at 13:58. I took mine at 11:40. Both in shade of back deck.
Tra must've taken a wrong turn...she signed up for fashion school...
www.youtube.com/watch?v=xzkiJJ_NkD0
DRD NEW @ VINTAGE FAIR
Rosie Platforms
Vintage Fair opens June 12
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Full Hud Styles & Color Options
Rigged for : Maitreya/Lara , Belleza/freya , Slink/Hourglass and The Shops/Legacy
Stuff
Ransacked Lockers by Angharad Greggan - Razor Bird
Pencil by Xiang Ying
Apple Fall Books & Map
TonkTastic - Beret
:V.e. Wednesday Dress MT
Ramones Lunchbox by Me
Twin School Desk by Sooden Ren
Ice encroaches on a wetland pond under gray December skies.
Water’s maximum density is achieved at near 40 degrees F and it is less dense when warmer or cooler. For this reason, ice in water bodies forms from the surface down, rather than the bottom up, with immense consequence for aquatic life, the integrity of aquatic ecosystems, waterfowl, ice skaters, and cubes of ice in a glass.
You Are Cordially Invited to the Culinary Event of…Well, Everything.
MILLIWAYS: The Restaurant at the End of the Universe
Have you ever wondered what the grand finale tastes like? What symphonies of flavor accompany the universe's ultimate curtain call? At Milliways, you don't have to imagine. You can experience it.
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Reservations are... Recommended: Due to the unique nature of our location and the unpredictable nature of the end of the universe, booking well in advance is advised. (Like, really, really far in advance.)
Special Offer: Mention this flyer and receive a complimentary "Singularity Sorbet" - a dessert that bends time and taste buds.
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The Restaurant at the end of the Universe - Douglas Adams
CFF 180 + QUADTCC @ F/5.2
TMB LZOS 152 + Riccardi Reducer @ F/6
Moravian G3 16200 + Chroma LRGB
Atik 460EX + Astrodon LRGB E series gen 2
Astro-Physics 130 GTX + QUADTCC @ F/4.5
Moravian G3 11002 + Astrodon RGB
Astro Physics 1200
L: 61x300s bin 1x1
RGB: 10x300s bin 1x1
Total exposure: 8h
Captured with Sequence Generator Pro
Processed with Pixinsight
Ich sehe einen abstrakten Geist :)
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected.
NGC 6910 is an open star cluster set amidst clouds of gas and dust near the bright star Sadr in the constellation Cygnus.
Subframes for this image were accumulated over 4 different nights, some under dark skies near Goldendale, WA and others from within Seattle city limits. RGB data for the stars was combined with narrowband data for the gas and dust, with Ha assigned to R. In an effort to maintain a "natural" appearance, only modest amounts of SII and OIII data were added to the G and B channels, respectively.
Telescope: Celestron EdgeHD 8" with 0.7x Reducer
Camera: QSI 683wsg
Mount: Astro-Physics Mach1 GTO
Integration: 30 min (6 x 5 min) each RGB, binned 1x1 | 300 min (30 x 10 min) Ha, binned 1x1 | 100 min (10 x 10 min) SII, binned 2x2 | 120 min (12 x 10 min) OIII, binned 2x2.
A 4:30am alarm with a quick stop at the Dunkin drive-thru got me to the New Jersey Festival of Ballooning in time to experience what it takes to unfurl, inflate and fly a hot air balloon. It's been years since I've done this and it was a beautiful morning to be amongst all the dedication and skill these crews have.
On another note, felt like it was time to update my profile pic. As much as I liked the old one, it looked more like a high school yearbook pic at this point. Lol!
Daisies, family Asteraceae, often have fluorescent pollen. Sunflowers are a part of that family and are no exception. Glowing yellow under an ultraviolet light, the pollen coats the flower petals with illuminated points of light like a field of stars. UV fluorescence photography is really easy to explore, you only need darkness and a UV flashlight!
UVIVF. Let’s break that down: Ultraviolet-induced visible fluorescence. This happens when UV light strikes a subject and is able to excite the electrons in certain atoms. Those electrons rise to a higher orbit, but instantaneously decay back to their original location. This spends a small amount of energy, so the light that is re-emitted from the subject now has less energy. UV light then transforms into visible light, and you can use your ordinary camera and lenses, so special equipment or filters required. The UV flashlight / torch I most commonly recommend is the Convoy S2. It’s all you need to start exploring this wonderful unseen world.
Sunflowers hold a special place in my heart because they tend to fluoresce blue and yellow, while simultaneously being the national flower of Ukraine. Today marks 150 days since the Russian Federation decided to destroy the sovereignty of the largest nation in Europe. They have not succeeded. I am continuously amazed at the resolve of the Ukrainian people, and I am thrilled to continue to support them in any way we can. Most recently we have contributed funds to purchase a surveillance drone for citizen soldiers, and we have two solar generators on order for use near the front lines. The people of Ukraine are the strongest that I have ever seen in my lifetime, and I’m glad that the world is coming to their aid.
It's also a great example of leadership, good and bad. Corruption runs deep in many Eastern European countries (probably all countries?) and this war has allowed for the discovery and dismantling of significant Russian influence. While Russia regroups for their next move, Ukraine uses the most precise and damaging weapons to erase countless enemy ammunition depots. The war is in one of the most peaceful moments, where weapons of intense destructive and terrorizing force are being systemically ruined.
Putin’s methodology for forward progress is sinister. He is forcibly conscripting Ukrainian men in occupied regions to fight for Russia – holding their families for ransom in the process. “Referendums” loom in various regions where the population will vote to be annexed by Russia. The Russian forces interview the population and if you say you’d vote for Ukraine, you are deported by force. This isn’t just a fight for some big country in Eastern Europe you’ve never visited, it’s a fight against the tyrannical actions of one of the most powerful countries on the planet. Putin’s Kleptocracy allows for these deceitful strategies, but it is also what has left his military weak and untrained.
Through this series of images supporting Ukraine, I have encouraged many ways to help. We heard of a Ukrainian restaurant that just opened up here in Varna earlier this month, Stefania: www.facebook.com/stefania.rest/ - the food was marvelous and it’s staffed by Ukrainians. It reminded me of the food being served today at my own Ukrainian family reunion taking place in Canada this very day. It’s important to support those around you affected by this conflict.
It also reminds me of the simple act of being kind to strangers. Around me, there are many people who have seen the terrors of this war. You never know what story someone is simply not telling you. As with all images in this series, I deliberately place “Starfield” into the Public Domain. More to come. Sorry for my absence in posting, life can get busy. I’ve used the proceeds from some of my own professional activities recently to further support Ukraine, and I would hope that world does not turn away from this continuing tragedy. There’s always more we can do.
Acrylic on canvas 35.75" x 28.75" September 30, 2020 www.saatchiart.com/art/Painting-Physics-Research-Lab-at-S...
October 3, 2023: Hi all. I’m covering for Andrea Gawrylewski today. Read on for the latest on the roll-out of the Nobel Prizes and the potential impact of satellites on astronomical observations.
—Robin Lloyd, Interim Newsletter Editor
TOP STORIES
Day Two of Nobel Prizes Week: Physics
Trailblazers in devising and using ultrafast laser pulses to study the motions of electrons have won the 2023 Nobel Prize in Physics. The award went to Pierre Agostini of the Ohio State University, Ferenc Krausz of the Max Planck Institute of Quantum Optics in Garching, Germany and Anne L’Huillier of Lund University in Sweden. (L’Huillier is only the fifth woman to have won the Nobel Prize in Physics.) The laser pulses for these probes are on the scale of the attosecond, the scale over which the motions of electrons typically take place. How brief is that? There are as many attoseconds in a single second as there have been seconds in the entire history of the universe (!).
What they did: In 1987, L’Huillier discovered that passing an infrared laser through a noble gas, such as argon, led to a pattern in the emitted light: a plateau in the frequency. This plateau would prove vital for work done in the early 2000s, when Agostini created multiple 250-attosecond-long pulses of light while Krausz, working independently, generated single 650-attosecond-long pulses.
The impact: Today’s researchers hope to use ultrafast lasers to get clearer views of otherwise blurry atomic processes. Probes with ever shorter pulses could deepen scientists’ understanding of electron dynamics and could lead to the development of novel semiconductors and medical diagnostics.
John Bolin donated some beautiful images....thank you!!! :
www.flickr.com/groups/vintage_madness/
I also was lucky enough to obtain permission to use these physics images from a professor of physics who created the diagrams.
Taken from the cliffs behind the Institute of Geophysics and Planetary Physics, UCSD. I would love to have this view from my office...
The wake turbulence cloud, and wingtip vortices are on display as an Etihad B773 approaches Toronto's runway 33L
Takahashi Epsilon 180, ZWO ASI 461 MM PRO, Astro Physics 1100GTO. 240 minutes of luminance and 100 minutes each of RGB from a Bortle 4 zone. All shot at gain zero.
Perfect for any setting this massage table contains lots of animations!
Full bento, RLV, INM, Physics, V Bento, VAW, Lovense.
Check out the store for other great items.
Great Nebula in Carina
This is a bi-colour image of one of the largest diffuse nebulae in our skies. It is a spectacular object that is about four times as large and even brighter than the famous Orion Nebula. It is one of my favourite objects in the Southern Hemisphere. Near the centre of the image you will see a very bright hypergiant star - Eta Carinae. Its luminosity is about four million times that of the Sun. Within the large bright nebula is a much smaller feature, immediately surrounding Eta Carinae itself. This small nebula is known as the Homunculus Nebula. If you look carefully, you can see that this star is not round. This happened in enormous outburst in 1841.
This was imaged under the great light dome of Melbourne, Australia
Telescope:250 mm, F9 Ritchey-Chrétien configuration
Mount:Astro-Physics AP-900 Mount
Camera:SBIG STL-11000 CCD (-20 C)
Image scale 0.83"/pix
Processing:CCDStack and Photoshop
Just my luck! Not many snowstorms create colourful snowflakes, and when they do they are usually smaller hexagonal gems. I was thrilled to encounter this vibrant flower in a slightly large crystal!
The colour here is well understood, but still magical. It’s not colour in the same sense as you would paint with (the paint would absorb certain wavelengths of light and reflect others, you see the reflected light), but rather generated through optical interference. This is the same physics that generates colours in soap bubbles, but in a snowflake is often much more structured.
One way or another, a bubble forms in the ice. The thickness of this bubble dictates the thickness of the ice on either side of it, and shifts in this thickness will change the resulting colours. Light bounces off of reflective surfaces, but a snowflake is ice, not a mirror; some light still enters the snowflake and reflects back off of the additional boundaries between ice and air. When light passes through a denser material (ice), it slows down, and when it reflects back out, it speeds up again. This is critical. If the distance traveled through the ice is small enough, the two rays of light will rejoin, but half of it will be “out of sync”. This causes some wavelengths to cancel out while others are added together, generating specific colours from otherwise white light. Very similar principals apply to sound waves and interference.
Once the bubble is completely enclosed, things can still change. Water molecules can break away from their crystal structure (sublimation) and re-attach elsewhere. This might slightly change the thickness of the ice in certain areas but in a gradual fashion. I suspect this is the reason for the gradient from yellow to magenta at the tips of the internal “petals”.
The central bubble here is fascinating for other reasons as well – just look at the outer edge of it. Notice these little “nubs” in each corner? Imagine the snowflake being just that big. Those little nibs would be the last elements to stay open to the outside air before shifts in temperature and humidity allow the outer edge of the snowflake to become whole again. What’s interesting here is that a snowflake typically grows fastest where it has the greatest access to water vapour – the corners. Why then did the corners take the longest to close up? Moreover, why did the middle of each prism facet also have a nub, which continued to progress a line-like bubble that eventually evolved into a sectored-plate design?
It’s a beautiful physics puzzle and fun to spend some time imagining how and why it came to be.
Shot on a Lumix S1R with a Canon MP-E 65mm macro lens. I’ve used a lot of ring flashes over the years, but my favourite is also one of the most affordable – the Yongnuo YN-14EX II: www.bhphotovideo.com/c/product/1462725-REG/yongnuo_yn_14e... . It’s better in many ways than Canon’s own MR-14EX II, and it’s what I’ve been using to shoot the snowflakes in this year’s series. For more tips on snowflake and general macro photography, you can also check out my upcoming instructional book, Macro Photography: The Universe at Our Feet - skycrystals.ca/product/pre-order-macro-photography-the-un...
For those curious about how the book is progressing? Coming along nicely! Most of the book is just undergoing revisions and grammar checks but there is still more work to be done. I appreciate your patience. :)
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Sixty Degrees. That’s the angle for all of these edges, give or take based on the fact that the snowflake is photographed at an angle. Physics at work, yet many people consider snowflakes as a creation of God. It’s amazing really, that the same object can be described by some as evidence of a Creator, while others use the exact same object to prove that the natural laws of physics make our world what it is.
Very few things can take equal sides like a snowflake. I have a side, but I don’t need to express it to express my fascination with our interpretation of the world around us. The real magic here is that we, as human beings, see this snowflake as beautiful. I don’t think many people would argue against that. That begs the question however: what is beauty?
Beauty doesn’t exist on its own. A massive organized collection of water molecules? It is just a thing, a (mostly) inanimate object when we see it. How do we perceive this as beautiful? It’s not the object that contains this value, it’s our perception of it. One could say it’s all in our heads, and I think they’d be right. Something is only beautiful because we say so, collectively or individually it doesn’t matter. So then, what is beauty?
It’s a deep question, and one that every person might have a different answer to. My answer reflects on the larger world around us. We see geometry as standing out from chaotic nature. We admire patterns. We adore symmetry. The most symmetrical face with chiseled lines might be perceives by many as being beautiful, but so too will a wrinkled old smile with the history of the world written on it. Beauty comes in many forms, based on how deep we look.
When I dive into the details of a snowflake, describing all of its features and how they came to be, I hope I add to the beauty. In the opening words of the documentary series Forces of Nature, narrated by Dr. Brian Cox, he says “the world is beautiful to look at, but it’s even more beautiful to understand”. Understanding the depth of beauty only makes these tiny sky crystals even more beautiful, and these posts are often aimed solely at this.
See the slightly brighter center? There is a hexagonal twin plate on the reverse side of the snowflake. The central “dot” shows that this was from a column that transitioned to plate-type growth, and the forward-facing plate gained dominance to grow branches. It was slow-growing which provides a more geometric profile, with extra complexities in the lower left – look closely and you’ll see signs of another plate running in parallel in certain areas.
But all of the science, all of the logic, have a hard time explaining beauty. Whether or not there was a master plan from God to put this snowflake in front of me or if it was just the natural chaotic physics of the universe, doesn’t really matter when we internalize our appreciation of the results. No matter what you think, this snowflake is beautiful.
That is the beauty of humanity.
P.S. if you want to comment on this image, please do so in a way that does not take sides on religion or science. We ALL have our opinions, let’s just keep this one human, okay?
“Mimicking physics and self-injury apparently requires some practice and research,” Kaija admits. “Once I had my frames ready, I went out and shot with my camera. Later, I piece the photos together in Photoshop by cleaning up the parts I don’t need.”
Despite the fact that Kaija’s photos were posted three years ago, they were posted on Tumblr about a month ago and became an instant hit — a complete shock to Kaija.
Explore Kaija's entire story on the Flickr Blog and visit featured photographer Kaija Straumanis' photostream.