Yea my thoughts too,... although with less facts to back them up
Redjard 7 points 3 months ago
The beta emission of ⁶⁰Co can probably get through over 6mm of glass. This should be plenty for phones.
But also
⁶⁰Co undergoes beta decay to an excited state of the stable isotope nickel-60 (⁶⁰Ni), which then emits two gamma rays [...]
Tar_alcaran 1 point 3 months ago
Even if it got blocked, there's a fair bit of metal in a phone which will produce Bremsstrahlung under beta radiation. Obviously that's only going to hit your face, not the sensor.
SaveTheTuaHawk 4 points 3 months ago
You sound like fun
magic_smoke 45 points 3 months ago
If you don't like neurodiverse people going off about special interests wtf are you doing on 196?
trolololol 6 points 3 months ago
I'm having fun, so thanks
And leave your bad vibes at the door, tank you
trolololol 3 points 3 months ago
Oh cool
So if you had a camera with mirror would it still go a bit through the enclosure and hit the sensor?
What if the sensor is flipped so it has to go through the silicon substrate before hitting the sensitive bits, would it be equally noisy but less noisy overall?
Redjard 7 points 3 months ago
Yes. Silicon substrate is too thin to matter. Redirecting with mirrors is probably gonna make it worse. Your housing would need over a cm of solid plastic to block beta radiation. On a dedicated camera you might have a sizeable lens with many lenses totalling a cm of shielding, but redirect the light and place the sensor not behind the lens and you only have that camera housing.
Realistically though you have a smartphone, and that β-radiation will probably make it most of the way through the entire thing.
And the gamma radiation really won't care, even if you have a 50cm long zoom lens right between the sensor and source.
This is where you might want a lead brick wall, 10cm thick should make it short-term safe for ⁶⁰Co.
Edit: forgot this was in general, not about the β
BygoneNeutrino 2 points 3 months ago
I was going to include a tangent on how difficult it is to shield a spacecraft from cosmic radiation, but I'll wait for a more appropriate post. Thanks for the refresher.
AnchoriteMagus 68 points 3 months ago
Replicas of Cobalt-60 sources can be got on Ebay for as little as $12.
turbowafflz 33 points 3 months ago
why would you even make that what purpose does that serve
panda_abyss 51 points 3 months ago
Telling a physics grad student to catch it and then seeing their existential dread?
KokusnussRitter 5 points 3 months ago
You are evil! I like it :D
AnchoriteMagus 51 points 3 months ago
Paperweight / conversation starter. As long as you know it's not real, it's just a cool chunk of brass.
Gladaed 22 points 3 months ago
Shouldn't be allowed to exist. This removes the terror and fear of seeing an actual Co-60 rod and may kill someone.
Never abuse warning labels for comedic effect. This is deadly.
turbowafflz 10 points 3 months ago
Yeah, wasn't a source lost on the side of the road in Australia a year or two ago where anyone could have picked it up if they didn't know better
Tar_alcaran 1 point 3 months ago
Never abuse warning labels for comedic effect. This is deadly.
A few years ago, there was a news story about a guy driving with radiation warning labels on his car for fun. He got fined HARD because he wasn't certified for that or had the permits .
Doesn't matter if you don't have actual radioactive material. That shit is illegal for a good reason.
expatriado 13 points 3 months ago
Ebay
we sell all the stuff that will puzzle you
grue 2 points 3 months ago
path: 0 23688657 23688914 23688965 23690611, hotness: undefined, score: 2, children: 0
glizzyguzzler 50 points 3 months ago
I highly recommend holding it within 3 feet of your body for 5 to 10 minutes; absolutely nothing can go wrong from holding a Cobalt-60 source with 3540 Curies in 1963 within 3 feet of your body for 5 to 10 minutes!
CIA_chatbot 45 points 3 months ago
Y’all looking at the radio-active isotope, while I can’t see past the mutated hotdog fingers
zero_spelled_with_an_ecks 50 points 3 months ago
ChicoSuave 30 points 3 months ago
That's a magic wand which makes the air taste like pennies.
fartographer 10 points 3 months ago
It's so rads!
half_built_pyramids 16 points 3 months ago
This should be a 3d print
half_built_pyramids 21 points 3 months ago
Omg yes
Berengaria_of_Navarre 6 points 3 months ago
My neighbour really wants some strontium 90 flavoured chocolate.
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I see the stylisric reason to only apply the effect around the object, but it isn't realistic.
That radiation isn't affected by optics, it'll go right through the lenses that flip and focus the image and the aperture that might be engaged, and will hit the entire sensor equally. The entire image should be that noisy.
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