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Oh yes I'd get much better quality with film in the cassettes. I'd also get to do really short exposures for normal subjects or very long exposures for dense objects. I don't have the access to or capability for developing film though.

Oh yeah UV does not need to be focused, heh. They're probably pretty low wattage so you'll be ok for a few second exposures here and there. The onset of corneal UV keratitis feels like dry eyes. You can catch it early before it gets severe, it will still be unpleasant but bearable. So just be...

Ahh you guys beat me to it! Very nice, Ped! I had a 185nm 200W LPHg lamp some 15 odd years ago and I loved it. Unfortunately it was fragile as eggshells and my folks lead to its demise by improperly trying to move it when I was away. Never did get a replacement. Sadly they junked the HV...

Cassettes are 18cm x 24cm. The imaging setup I am using is filmless. I have a Micro-4Thirds Mirrorless system camera directly imaging the fluorescence of the X-Ray Intensifier Screen. From left to right it is X-ray source, 2cm space, light-blocking shielding (cardboard), 13cm space, target item...

Oh I didn't mean -my- x-ray source can kill in 10min. Mine's only putting out about 100R/hr. One hour for onset of rad sickness. I only get about 5minutes of battery life, haha. However, I got messaged from a fellow asking about doing what I did but with a 3.5kW rotating anode tube. Rough...

The difference is in electrode geometry and air composition. With large diameter spherical electrodes (diameter is a large ratio (>x10) compared to gap distance) in 100% dry purified air it is 3MV/m at STP. When you have real air conditions; normal particulate counts at average humidity, it...

New Radiographs! These images are large so I'm not going to post them locally, sorry! Check them out on my site! Sigurthr Enterprises: New X-Ray Cassettes Came In... New Radiographs to see!

No. Just, no. Air breakdown rule of thumb for ROUNDED high radius electrodes is 10kV/cm. If you are using pointed electrodes it can be as low as about 4500V/cm, but lets use 5k/cm for being generous. So, you measured 3.8cm spark initiation (or did you draw it out to that length?, draw length is...

Looks excellent so far Jefferson! I forgot to mention in our emails, you might want to stick a high value resistor (100k and up) across the rails of the filtering caps because, well, keeping all 10 fingers and not dying are generally high on one's priority list. That doubler will store about...

That link doesn't work. Either way though, a dosimeter is only a dosimeter if it is calibrated and certified for the specified radiation source in question. Unless that links to a $$$-$$$$ ion chamber survey meter, scintillator probe, or badge system it isn't appropriate. I cannot stress enough...

Back when I did amateur chemistry (including pyro), I was jumpy as a jack rabbit. Kinda glad I was so jumpy after reading this, heh. I even "blew myself up" once, though it was a concussion explosive and I was about 8 meters from ground zero, so I was merely knocked off my feet and back a few...

Fluoroscopes are awesome, and awesomely dangerous. The things we used to do medically are absurd today, heh. I'm currently trying to nail down the exact exposure rate this device puts out, so far I've gotten it to be either 10R/hr or 100R/hr, depending on the technique used with my ion chamber...

I guess, lol. With how they're doing mobile phone pricing these days I won't be upgrading any time soon. You used to be able to get a free upgraded phone every 2-3 years if you signed on for several years (usually 2), but now no carriers are doing that and instead you either have to buy the...

Yeah I just downloaded it for iOS and have been using it a few days now. There's one fatal flaw... the keyboard interface is S.......L......O......W... I means unusably slow. It takes about 1.5sec per keystroke to register. It will cache a sequence of keystrokes for at least 10sec long, and then...

High voltage electrostatic propulsion of the oil bath! There's a jet from anode to cathode and from higher to lower potentials. One of the best things about doing physics projects is all the tangential phenomena that you get to experience and learn about. I knew of the effect beforehand but had...

Here's the video of the exposure measurement! https://www.youtube.com/watch?v=yGJ8aY4x6iU yGJ8aY4x6iU

One of the reasons I bought this ZVS unit is it uses Marko's revision of the Mazzilli ZVS circuit; two input inductors allow you to pull each end of the parallel LC with fets instead of pulling across alternating legs of a center tap. This means it can be used with two-terminal primary...

You forgot to translate from eBay Chinese click bait... It's a ~300W ZVS when used on 24V, the 1kW rating is just made up. The reactive power in the tank under no load; about 150A @ 30V for 13.8V input. As for Fluoroscopy (live radiography); tried it but the image is too weak with this XIS...

Thanks! I definitely think you'll enjoy the blog post too, I did my best to make it widely approachable and intelligible, if a bit wordy. I intentionally left out explanations of the construction/design/functionality of the ZVS and CW Multiplier sections. I figured they would be too esoteric for...

Thanks! Haha, nope. That's normal though, I don't have fully functional circadian rhythm, ties in with my other endocrine issues. I typically need to get 10-16hrs of sleep per night to keep my Addison's in check, but once a week I wind up getting 3-6hrs instead as I have to get up on time for...