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Dave:. See if you can find a "Nuclear Bomb Effects Computer". Used by Dr. Strangelove to calculate the half-life of Cobalt-Thorium G.

I have several hundred different types, including paper ones, smith chart ones; slide rules for indexing x-ray diffraction patterns, and a cool nuclear bomb blast calculator - including radiation

Thank you. I almost jumped out of my shoes when I saw it

That was a nice present

I still have a vest-pocket sized circular slide ruler down in the basement. Given to me by my high school science teacher, who insisted we learn the basics of a slide ruler before ‘graduating’ to

Nice find. Slide rules still have value. I have a small collection gathered mostly on ebay.

I never found my late Fathers slide rule. his was a little wider than this one. I am going to mound it on the Living room wall allong with his picture and his 3 University degrees. I mounted a Abacus

nice

a slide rule

A slide rule. It's been nearly 40 years since I used one. Not sure I still remember how... 73 Stan KM4HQE

Nice find!!! Cheers, Lyle -- "Martin Glazer" <mglazer2014@...> wrote: > > > -- 73 NM6Y Bickley Consulting West https://bickleywest.com "Black holes are where God is dividing by zero" -- 73?

The kind that designed the Mercury, Gemini, and Apollo Spacecraft!

What the heck kind of ruler is that!? John

nice [email protected]> wrote:

K&E 4138? Log/Log Deci-trig?

I have a well maintained bamboo slide rule in a drawer somewhere here. Never liked the metal ones. It got me through college to a BSEE, but shortly after that, on my first full time engineering job at

Lucky you!!!!! Remember, during the Manhattan Project at Los Alamos, the Slide Rule "made" the first U and Pu supercritical masses happen. Trinity (New Mexico) proved their worth. I need to shop our

In addition to my last post, SWR / VSWR can be measured using either voltage or current. If there is SWR / VSWR on the line, both will change according to Ohm's Law. At any given point referenced

QUOTE: " So, you are saying that VSWR is based on voltage, but caused by an impedance mismatch." IF: Z(Source) = Z(XMSN Line) = Z(Load) There will be no standing waves and the SWR / VSWR will measure