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**rprosperi** · 12-04-2024, 04:08 PM

Ran across this site today:

https://www.omnicalculator.com/

Something here for everyone, but no claims about how correct / useful they are, just an FYI.

Maximilian Hohmann · (This post was last modified: 12-04-2024 04:36 PM by Maximilian Hohmann.)

Hello,

I wouldn't call these things calculators. They are more like dedicated programs like the ones we run on our calculators. And the two or three I have tried (maybe I was just unlucky in my random choice) were so trivial that I would not even bother to write a program for it.

Regards
Max

NB: Prove me wrong by showing me a really clever one :-)

Dave Frederickson · 12-04-2024, 04:31 PM

I don't see any cold war calculators.
https://calculating.wordpress.com/catego...lculators/

MinkLib · 12-04-2024, 04:39 PM

Fascinating Dave!
Wish I had one.
Although given the Soviet Union only had another 3 years to run, the timing of the calculator production is a little ironic..

Dave Frederickson · 12-04-2024, 04:51 PM

Here's the link I was looking for.
https://calculating.wordpress.com/tag/volvelle/

I like this article because it mentions the 71B and HTI, the developer of many HP-71 ROM modules for ballistics.

Bob, don't you have a couple of these?

Dave

**rprosperi** · 12-04-2024, 10:23 PM

@Max - I agree with you, but that's what the author's call them, I'm just the messenger...

@Dave - Yes, possibly all of the American ones, from a past life. The Russian ones are new to me, gotta look around for these.

The book the Blue one comes from, "The Effects of Nuclear Weapons", Revised Edition, by Glasstone, is (was?) the bible on such calculations and is often available via ABE inexpensively, but no copies there still include the calculator.

carey · (This post was last modified: Yesterday 08:15 AM by carey.)

(12-04-2024 04:08 PM)rprosperi Wrote: Ran across this site today:

https://www.omnicalculator.com/

Something here for everyone, but no claims about how correct / useful they are, just an FYI.

Thanks Bob for posting this!
The various online calculators also include some helpful discussion.
I found the discussion of the Box method for factoring trinomials (i.e., quadratics) interesting and fun!
https://www.omnicalculator.com/math/box-method
I don't ever recall seeing this method before (but might have missed that day of school! :)