Particle Physics
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Kristalldetektor (Kernstück eines Radios der Anfangszeit), hergestellt von meinem Urgrossvater in den 1920er Jahren. Der Kristalldetektor ist eine frühe Form einer Schotky-Diode und diente zur Demodulation des empfangenen Signals. (Eine Aufsicht ist hier: www.flickr.com/gp/165543166@N06/H8j298)
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Crystal detector (core of a radio of the early days), made by my great-grandfather in the 1920s. The crystal detector is an early form of a Schotky diode and was used to demodulate the received signal. (A top view is here: www.flickr.com/gp/165543166@N06/H8j298)
Kristalldetektor (Kernstück eines Radios der Anfangszeit), hergestellt von meinem Urgrossvater in den 1920er Jahren. Der namensgebende Kristall (Bleiglanz) ist eingefasst in der linken der beiden gerändelten Scheiben sichtbar und wird über ein Federblech mit einer Spitze kontaktiert. Der Kristalldetektor ist eine frühe Form einer Schotky-Diode und diente zur Demodulation des empfangenen Signals. (Eine Seitenansicht findet sich hier: flic.kr/p/2ic9A5Y)
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Crystal detector (core of a radio of the early days), made by my great-grandfather in the 1920s. The name-giving crystal (galena) is embedded in the left of the two knurled discs and is contacted by a spring plate with a tip. The crystal detector is an early form of a Schotky diode and was used to demodulate the received signal. (A side view is here: flic.kr/p/2ic9A5Y)
Macro Mondays - Safety, February 1, 2021
- This photo shows the inside of a fire detectors.
- HMM to all flickr friends.
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Auf der Brücke der «Cap San Diego». Die «Cap San Diego» ist ein nach wie vor seetüchtiges Museumsschiff (Baujahr 1961) und hat seinen Liegeplatz an der Überseebrücke des Hamburger Hafens.
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At the bridge of the "Cap San Diego". The "Cap San Diego" is a still seaworthy museum ship (built in 1961) and is moored at the Overseas Bridge (in German: "Überseebrücke") at the Port of Hamburg.
Metro. Lisboa
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The Waynesburg Southern branch of the Monongahela Railway, opened in 1968, did not have stations or lineside structures normally associated with lines of earlier vintages. It did have block limits set up at what would come to be known as control points along the way. Here a Conrail caboose on a northbound loaded train passes the dragging equipment detector at COT, in Pine Bank, Pennsylvania.
Pulling at Gladstone, CN 5404 passes the ancient detector at Gladstone. From what I can find, there's only one other existing example of this style of detector, which would read out the axles for the rear-end crew.
This fly is sticking his tongue into some pancake syrup. For those that like proper names here is a clip below.
"A fly's "tongue" is called a proboscis. This is a straw-like appendage used to suck up food. Flies can only consume liquids, so they often spit on solid foods to dissolve them with enzymes and acids before sucking them up with their proboscis."
I have been testing out a new flash and it is working quite nicely. Godox V480 Flash.
"Spring, spring, spring it's you"
- these are the words of a some song.
Maybe hope and joy will come with her.
CN 5770 & CN 8927 lead a 512-axle CN 377 past the hotbox and dragging equipment detectors located at MP 29.2 of the Kingston Sub.
A wary Green Jay considers the danger of my presence near a feeding station at Sabal Palm Sanctuary outside Brownsville, Texas.
Metro. Lisboa.
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Mile Post 1165. No Defects, Repeat no Defects, Total Axle Count 4-8-4, Detector Out. Was a noise we all became well acquainted with whilst chasing trains around the BNSF.
BNSF loaded crude oil from Tioga, ND to Ferndale, WA (Phillips 66 Refinery).
3821-7308-5794(r)-5471(r) BNSF U TIOFEP0 04 West Java 28-4-25
Lisboa. Portugal
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Just playing around with the dashboard of the 2006 Infiniti G35 Coupe. Another of my Escher (or Droste) type photo manipulations. [see the first in the set for more info].
©2008 David C. Pearson, M.D.
The face of a hammerhead is a piece of incredible, primitive, engineering. Perfect for scanning for living creatures buried beneath the sand.
Who knows what that thing is really picking up?
This is a quick little build that I mostly completed in an evening, with some tweaks later as Bricklink orders arrived.
Fun fact: I only have two of those skulls, and one is on the ground in the cave. I had to take three photos and merge them to get the skull faces on all the legs. More will be here from Bricklink eventually...
Bonney works a beach with her metal detector in the cool of a late summer afternoon. Over the years. she has pulled a heap of colonial-eraand early American artifacts from this sand, where two centuries ago a vast wooden shipbuilding enterprise thrived.
From the Treaty of Paris that legitimized our nation on the world stage, until steam power finally eclipsed wind power for moving ships, American sailing vessels, stout and swift, plied fishing and trade routes across the North Atlantic under the new Star Spangled Banner. Many were built on Shipyard Lane in Duxbury, MA, where Bonney is beachcombing. Today a sharp eye is required to see any trace of this era of industry. A metal detector helps, too.
Aside: There are no wooded hillsides like this in Duxbury. I tucked a little piece of Vermont in the back as balm for my homesickness.
La Bocca della Verità (English: The Mouth of Truth) is an image, carved from Pavonazzo marble, of a man-like face, located in the portico of the church of Santa Maria in Cosmedin in Rome. The sculpture is thought to be part of a first century ancient Roman fountain, portraying one of several possible pagan gods, probably Oceanus. Most Romans believe that the 'Bocca' represents the ancient god of the river Tiber...The most famous characteristic of the Mouth, however, is its role as a lie detector. Starting from the Middle Ages, it was believed that if one told a lie with the hand in the mouth of the sculpture, it would be bitten off...This girl believes that this mouth can bite. She’s very afraid because she doesn’t remember did she tell the truth to her mother who smashed the vase to smithereens yesterday, she or the cat...
(60.00N, 30.00E)MCMLXXI
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What does not matter ?
1.What to photograph - Camera.
2.Where to photograph - Place.
3.When to photograph -Time.
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What is important ?
1.Study and tune the camera.
2.Learn where you are going.
3.Study the lighting at different times.
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What's the secret?♀️
1.Feel the instrument, hear what it says.
2.Feel the atmosphere of the place, catch the wave.
3.Switch on .Catch the moment!⚡️
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Make a choice!
✨Finding the observer, comes awareness!✨