Tag Archives: radiation

Next meeting: Monday October 16th. Have a topic/film you’d like to present?

TOCPUG meetings are now held on MONDAYS.

We already have a bunch of topics to hit on:
– GH5 Firmware 2.0.  This is quite the update, and it pushes the GH5 into H.265 – 6K territory!

If you recently made a film/doc/etc, and would like to present an excerpt/short, let us know!

 
Our group of industry types are a fantastic sounding board.  TOCPUG has some of the best
Q&A ever!  
Also, if there is an app/trick you’d like to present/tutorialize on, or a gadget you’d like to show/present,
let us know!
Next meeting: MONDAY October 16th – 7-9pm . 
 550 St. Clair West – 2nd Floor
 Toronto.
TOCPUG is open to all/forever free.

TOCPUG APRIL 4 GEIGER COUNTER RESULTS ~ Next Meeting May 2nd

FANTASTIC NIGHT!  Great turnout, and lots of vintage glass to scan!  

Based upon this article which mentions  vintage lenses from the 1930-70s containing Thorium: https://petapixel.com/2013/05/03/deca…

TOCPUG offered free geiger counting services on the night of April 4th. Attendees who brought in their vintage glass, could see if it was radioactive.

Here are the results. Keep in mind, Thorium is an alpha decaying radiation, not great to keep near the eyes, but generally safe to use.

Lots of internet discussion over “Thorium lenses”, this summates it nicely: https://www.reddit.com/r/askscience/c…

 

This chart also puts radiation in perspective: https://xkcd.com/radiation/