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Circuit board and speaker from a Franzis bat detector. The unit picks up ultrasonic sounds from bats and plays them at a
frequency audible to humans. It also detects other things such as species of grasshoppers that chirp at a frequency humans cannot normally hear.
It comes as a kit of parts which you solder together yourself. All part of the fun.
The care with which Lenswrangler has defined sound, and the fact bats and some grasshoppers are inaudible to humans raises the old philosophical argument
" If a tree falls in the forest and no one is around to hear it ,does it make a sound.?"
One argument is NO it only makes airwaves. It does not become sound until a brain interprets the airwaves as 'Sound'.
But do we exclude all other animals that might have 'heard' the tree the same way as we do. Or creatures that might detect its fall as vibrations through their body?
Is it still sound if bats can hear it but not humans?
Alentejo. Portugal
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when i asked this guy if i could shoot his photo he said, "sure, but let's make it fast, i'm in a hurry."
1/31/2021 Voltage Detector
Nikon D610 Nikon 50mm 1:1.8 f/16 with 20mm Extension and Nikkor Close-up No. 2
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My second and last contribution for this year’s Febrovery. Once again taking inspiration from an old space theme, this time Spyrius. I built a surveillance rover on patrol near a power generator. The dish folds down neatly into the rear and the cabin seats two minifigures.
See other images on Brickbuilt.
CN's Rail Detector RDC is at Tower B12 in Franklin Park. It went down the old Soo to Madison St. and headed back north.
Soudan Underground Neutrino Lab
MINOS is a particle physics experiment. It consists of two large detectors and optimized to detect neutrino interactions. The main objective of the MINOS experiment is to study the Neutrino Oscillations between the two detectors.
The 2015 Nobel Prize in physics was awarded to Takaaki Kajita and Arthur McDonald for their contributions to observations of the neutrino oscillations, which proves that neutrinos indeed have a mass. Neutrino oscillations are the first experimental evidence of physics beyond the Standard Model. Congratulations to Takaaki Kajita and Arthur McDonald for a great achievement!
I have turned the photo 90° to the left. If you imagine it in portrait format, you can see a narrow, high side corridor in the "German Maritime Museum" in Bremerhaven/Germany. The rectangular skylights are integrated into the ceiling and the smoke detector is attached to the ceiling. By turning it to the left, the photo looks as if you are looking into an open and empty room with high side windows.
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Das Foto habe ich um 90° nach links gedreht. Wenn Ihr es Euch im Hochformat vorstellt, seht ihr einen schmalen hohen Seitengang im Deutschen Schifffahrtsmuseum in Bremerhaven. In die Decke sind die rechteckigen Dachflächenfenstern integriert, und an der Decke ist der Rauchmelder befestigt. Durch das drehen nach links sieht das Foto aus, als wie wenn man in einen offenen und leeren Raum mit hohen Seitenfenstern blickt.
This old and abandoned dragging equipment detector sits on the TP&W just east of Wolcott, Indiana on September 12th, 2007. I don't know if this is from the PRR days or was installed after the TP&W took this segment over but it was not in use at this time. I'm not sure if it still stands today. Looking at Google Earth it looks like something is left here, maybe the relay box. View is looking east towards Monticello.
SLR 393 with QGRY 3105 - CBFX 6028 - CBFX 6029 - SLR 3805 approaches Fore St. in Oxford ME near the MP 43.0 detector.
March 1, 2018
A Space display is the opportunity to make small "funny" vehicles
Here is another classic rover, well known in "Classic Space" : Mineral Detector Rover
The London Polygraph Company has been providing the leading lie detection/polygraph services within UK. All examiners from the company have graduated from prominent polygraph schools and trained under high supervision to ensure their skills and knowledge for conducting test services.
SPNC - Year 2 - Instruction #04
"Scale. How small can you make something in the frame and have it still be the photo's primary visual subject?" Blake Andrews
6877 Vector Detector (1990) demonstrates "The Power of Magnets," not to navigate the moon's weak magnetic field, not to evade detection, but ... to pick things up. Kind of underwhelming to find that out.
A Royal Australian Air Force AP3-C Orion taxiing at RAAF Williamtown Base during joint Operation Diamond Shield.
Newcastle, New South Wales, Australia
From the RAAF Website;
- "The AP-3C Orion is an extremely versatile aircraft capable of land and maritime surveillance, anti-submarine and anti-ship warfare, naval fleet support, and search and rescue operations.
The Orion aircraft first entered military service in 1968 as the P-3B model, with the P-3C variant first introduced in 1978. Following several modification projects the significantly upgraded AP-3C Orion (current) were introduced into service in 2002. The AP-3C is a significantly enhanced capability from the first P-3B model; now fitted with a variety of sensors, including digital multi-mode radar, electronic support measures, electro-optics detectors (infra-red and visual), magnetic anomaly detectors, friend or foe identification systems and acoustic detectors. Based at RAAF Base Edinburgh, in 2012 the AP-3C Orion ceased 10 years of operational service in the Middle East, completing 2,400 missions with more than 3,500 personnel deployed throughout the period.
Things didn't go well for CP 112. They hit a dog at milepost 101 up the line and had multiple defects come up on the milepost 99.8 defect detector.
Conner McDowell is an absolute legend.