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Also blew shrapnel into my arm from pounding flat a distress signal pen flare at age 9. the flare was pounded with a hammer and then suddenly hit the primer which set off the entire flare at once. I ended up burning off my eyebrows and front of my hair from the flash. A bit of the aluminum...

What are you some sort of cyclops?

Tritium enhances your natural glow and radiance.. or so I hear. meh...

Homemade concentrated Nitric Acid in middle school, made from boiling Conc. drain remover and very pure Potassium Nitrate. A Reaction got out of control with the acid and filled the garage with Nitrogen dioxide while it ate through the concrete floor. A small pea sized amount landed on my...

Just doing some experiments the other day with very high quality glow powder for an x-ray scintillation medium and discovered by accident that under 400W Hg arc light (pulse discharge), the glow powder SrAl2O4 : Dy gave off a very intense green light... very monochromatic. Reminded me of a...

So, I finally moved into the realm of high speed ( non-soundcard / DIY) Gamma spectroscopy earlier last week. The method was to mate together my Gamma spectacular and a high speed ADC+FPGA + ARM 7v to pull pulses from my NaI/Tl detector at roughly 35nS per sample. So, you say .. why would you...

Had no idea UVC could be had from AlGaN LEDs... wow.... and they are quite expensive too $60ea. Pics?

If the US continues to infight, it too will also end up being completely decimated as well. A collapse this size would put an end to the global economy as we know it and usher in a new great depression. The Italian situation is beyond horrific.

StarWars fans -- It has been rumored that the Hu may be making a guest appearance in ep2 and 3 of the Mandalorian along with the appearance of Mark Hamill as Luke Skywalker. -- Possibly as an effort to tie Fallen order and the Mandalorian together. The last two movies were pretty terrible...

The hand helds are no longer because some of their lasers were being used by protesters in HK against police.

Finally got around to adding a digital count rate meter to my Bicron Surveyor MS. I have 2 digital outputs from the meter. One is a TTL logic pulse (+) and the other (inverted) goes into a PIC24 based pulse counter (yocto PMW-Rx v2) that can stream over a wireless hub or directly onto a...

Instead of going with 26650 cells one should look for 21700 sized cells as they are more or less identical mAh but smaller. I have a vendor in Shenzhen who carries high capacity Samsung Chemical 21700 cells that I just got 4 batteries from. They have been tested. Each one takes 3hrs to charge at...

yes, I was wondering about the Air flash lamp. Other versions of dye lasers use a TEA Nitrogen laser as a pump source, same idea... more or less. How was the price for the Rhodamine 6G and other dyes you used?

Here is a discrimination of Cs137 and Mn54 being done off an iPhone 6S+ Peaks are resolved well 661.7KeV Cs137 and 834.8KeV for the Mn54. Total time for resolution was only 2.5 minutes. Very useful. A smallish 10Ah Miniso battery bank powers the spectrometer for portable use. In...

Here are the pics.. Lead pig for the Cs137 and Mn54 (mid-energy gamma storage container) Knocks ~60% of the emissions down. Still ~100KPM at the surface of the pig. Exposed Caesium 137 source (toasty warm) :) Gamma spectrometer running at 651V.. Note the SHV HV connector on the right...

You are running a Nitrogen flash lamp as your pump source?

Running into issues posting pictures. The server doesn't resize the picture and blows a internal server error. ( try again later)

I have been on this topic for a while now so please bear with me. I do amature gamma spectroscopy among many other things as a hobby... I am one of these people who seldom finds anything boring/tiresome. Late last year, (Spring of 2019) I finally acquired a very well built Scionix 1.5" dia...

Yes, I am sure you were aware. I was just reiterating that many of the herbal remedies used in Korea have some fairly recent scientific backing. Other alt. remedies are more in folklore or superstition ( based on looks).

I am not trusting of herbs until I have seen some proof of action. Many of our pharmaceuticals come from plants. A good example of this is Willow bark. Will bark contains salicin and salicylic acid that both act upon pain receptors. Another, Phellinus linteus, a wood mushroom used for 1000s...