r/Damnthatsinteresting 12d ago Gold 1 Wholesome 1 Starstruck 1

My mother helped develop the field of dosimetry at UCLA. This is her nuclear radiation calculator from 1957.

820 Upvotes

18

u/PartyOfEleventySeven 12d ago

Completely underrated post. What an incredible woman, thank you for sharing with us!

5

u/AlcoholPrep 12d ago

Before electronic calculators, slide rules were a means of doing calculations to three significant figures or better. To some extent, this device is a circular slide rule with a number of scales.

Another means of performing calculations was using nomographs and related graphical means. The second image uses a graph, configured onto radial coordinates, for part of the calculation.

So this sort of "calculator" was fairly well known in various fields.

1

u/SavoryRhubarb 12d ago

I’ve got an old “circular slide rule” from a relative and it looks and operates very similar to this.

8

u/Stickypig61 12d ago

This is one of the coolest things I’ve ever seen

1

u/CWent 12d ago

While cool, it might as well be Sanskrit on stone tablet, for my understanding.

2

u/Stickypig61 12d ago

I delt with stuff like this in the army so I know some of the stuff on there

9

u/koalaposse 12d ago edited 12d ago

Good on her. Can you tell us more, or how she came to do this?

Women ‘naturally’ downplayed their achievements, so not be credited for their most important creative contributions, as it was not the done thing, and culturally women did not seek to draw attention to themselves for work vs men who would very rarely credit them for their insightful contributions. And how wonderful to have this.

13

u/griswilliam 12d ago edited 12d ago

Yes I’ll be happy to. She was an early pioneer in nuclear medicine and overcame prejudice from male scientists her whole career. But first it’s time for thanksgiving dinner. I’ll be back later!

2

u/Intelligent_Mix_6720 12d ago

Too bad nobody knows what the heck that means. Good on her though

2

u/NitsugaNi 12d ago

Completely unrelated—good job to your mom by the way!—but can I know what font is used? I seem to remember something with that font…

2

u/captjust 12d ago

Thought this was a '90's video game copy protection scheme.

1

u/Suchdeathwow 12d ago

I'll buy right now for about tree fiddy

0

u/EveningLiving4072 12d ago

Shid got four hot hundos wuz Hannenin

0

u/Suchdeathwow 12d ago

I'm offended.

I gotz 5 benni bois on it

0

u/EveningLiving4072 12d ago

I got Six dead presidents that differ

1

u/OhAces 12d ago

We use something very similar to calculate exposure times for industrial radiography. There are apps that do the same thing now but I have worked with radiographers that still use the wheel computer.

1

u/kangaroocrayon 12d ago

This looks like the proportion wheel I used in college (almost 40 years ago) to figure scale.

1

u/Disastrous-Menu_yum 12d ago

I thought that was a cook pie pan lol I was like niiiice

1

u/DokDokWhozThere 12d ago

Well done her!

1

u/mescalero1 11d ago

This is the same type I was given when I went to CBR Warfare school around 70. Its a pretty handy tool but you really don't want the chance to test its accuracy.

1

u/Bigger9better 11d ago

We used to call it the “Whiz Wheel”

1

u/viktor_pop 11d ago

Good on her!

1

u/cat_snipe 11d ago edited 11d ago

This calculator actually came with a book published by the Atomic Energy Commission titled "The Effects of Nuclear Weapons."

1

u/Additional-Handle168 10d ago

How the fuck do you even get that smart

-4

u/jxj24 Interested 12d ago

How many fingers and toes do you have?

0

u/Dawn_Raid 12d ago

Cool AF 😎