Showing posts with label Laser. Show all posts
Showing posts with label Laser. Show all posts
Friday, November 8, 2024

Using a Photomultiplier THERMATRON to Detect Single Photons

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I've been a fan of Jeroen's YouTube channel for a while now.  He has a very nice approach, combining theoretical knowlege with pract...
Tuesday, May 21, 2024

Laser Communication in London 2007 -- a Pointer, a VW Solar Panel, and Radio Kismet

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Hack-A-Day has an article today about using a laser for data transmission.   This reminded me of a discussion I had with Mike KL7R about sim...
Monday, August 22, 2022

Mike Caughran KL7R's Last Podcast

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  Mike KL7R (SK) during a visit to the AL7FS shack. This was Mike Caughran KL7R's last podcast. He died in a car accident shortly after...
1 comment:
Monday, February 8, 2021

A Quantum Mechanics-based Receiver. The Rydberg Detector

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  Looks like you SDR guys are going to have to up your game!   https://phys.org/news/2021-02-quantum-entire-radio-frequency-spectrum.html?fb...
Wednesday, February 3, 2021

Shuji Nakamura -- The Inventor of Juliano Blue LEDs

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He is the 2014 winner of the Nobel Prize for Physics.   He is the person who figured out how to make blue light LEDs through the use of an I...
3 comments:
Wednesday, August 19, 2020

SolderSmoke Lexicographer Worked on Earth-Moon-Earth Laser

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Hi Bill A ham, well known to us, actually me, was very involved in the very first laser reflector experiment.  I was a new EE gradu...
Monday, August 17, 2020

Earth-Moon-Earth -- With Lasers

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https://www.nytimes.com/2020/08/15/science/moon-lasers-dust.html Thanks to Chuck KE5HPY for alerting us to this very interesting articl...
Saturday, September 1, 2018

Lasers. Big Scary Lasers. And a guy with THE KNACK

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Here is another young fellow who shows all the signs of having "The Knack." I think his findings would be very useful for those ...
1 comment:
Friday, March 4, 2016

That Time We Were Re-Transmitted on 487 THz On a Red Light over Salt Lake City....

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Some of you may remember this from back in 2012: http://soldersmoke.blogspot.com/2012/09/soldersmoke-in-red-light-zone.html Fast forw...
Saturday, November 28, 2015

Photophone! Modulating the Sun by G3ZPF (and Alexander Graham Bell, and Mr. A.C. Brown of London)

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Yesterday David G3ZPF sent us another very interesting e-mail, this one about some very creative sunlight communication ex...
2 comments:
Tuesday, July 23, 2013

The Nanomembrane Laser Detector Receiver

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   I like it!  Here we find some cutting edge radio technology that does not involve millions of microscopic transistors and thousands ...
Friday, September 21, 2012

SolderSmoke in the Red Light Zone

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Hi Bill, I've been a listener to Soldersmoke for several years, now and look forward to the podcasts and postings. This past weekend ...
Thursday, October 23, 2008

Lasers, LEDs, Tin-foil Hats, and QRP

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Yesterday I got a very interesting message from Rye, K9LCJ. The map of Tasmania comes from the Modulated Light DX portion of the KA7AOI si...
Monday, October 20, 2008

Laser QSO and Visual EME with laser!

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Bob, Kd4EBM, sent me some really good info on laser safety. Bottom line: For the time being anyway, Billy will be limited to the http://ww...
Tuesday, August 26, 2008

Shooting Lasers at the Moon

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Ron Sparks, AG5RS, sent us this very cool picture. My kids take great delight in shooting those tiny red laser pointers out the window, an...