Coin-sized nuclear 3V battery with 50-year lifespan enters mass production
(www.techspot.com)
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Well now certain people won’t have to worry about the smoke detector chirping till they’re at least 50yrs old.
Kek
But will you put it in your key fob & then in your pocket ?
Don't smoke detectors work by detecting radiation?
No, not by detecting RADIATION but by detecting smoke or anything that interferes with the radiation tripwire. Imagine a photoelectric cell that is constantly on (except that this is a field generated by a small radioactive element) and a person walks through the light beam and sets off the alarm. Same with smoke in this case, it interferes with the field emitted by the Americium contained in the smoke detector. So it's not really detecting radiation, but for the lack of it. That's the best analogy I can make.
AKA radiation ---- smoke stops Alpha radiation
Smoke detectors work by detecting Alpha radiation changes.
Gamma rays don't give a shit and go through everything, but Alpha rays get stopped easily.
...thus it detects the absence of radiation...
To detect the absence of radiation you have to detect radiation.
So, they DO detect radiation ---- and look for a drop.
No, the radiation ionizes the air inside the device and creates an air flow allowing the air to constantly flow through the detector to be sampled. The smoke is detected by other means such as breaking a photoelectric beam.
No one said where the radiation came from.
It works by detecting radiation.
Photocells work by detecting light --- sun or flashlight or infrared LED, doesn't give a shit
I have to say, I do not know that answer. Damn it cyberrigger, now I have to find out how smoke detectors work before I’ll be able to sleep.
They come with an Alpha radiation source (easily blocked by smoke).
This radiation passed through air.
A detector looks for a drop in radiation, because of smoke.
Oh, so it’s a question you already knew the answer too you sly dog, I see how you play the game.
Don't you remember the "safer" radioactive watch dials that used alpha particle radiation to glow? ----- instead of the old, dangerous radium dials (beta and gamma radiation)?
Alpha penetrates the least
Beta penetrates more things
Gamma ----- this shit goes through everything
Alpha stops at your skin
I alway’s wondered how dangerous those radium dials were. I know they make replacements for watch repair. Damn it cyberrigger! Now I have to look up the half life of radium and it’s rad count.
there were some tritium (super heavy hydrogen) based dials deemed to be not as dangerous
https://en.wikipedia.org/wiki/Tritium_radioluminescence
radium dials emit a lot of gamma radiation ----- goes right through you.
That's the ionisation type. There are others, such as optical (beam of light broken by smoke) and heat detectors which use a thermocouple detecting either a fixed temperature or a sufficiently rapid rate of rise. There is another, aspirating, but that is not used in homes, it relies on sampling air and creating a rapid pressure drop at intervals. If there are hygroscopic nuclei in the air (smoke or the precursors) a "cloud" will form and that is optically sensed, they are used in warehouses typically, because they are good for early warning of fire, before it even starts often (strike a match and it goes off even if you blow out the match immediately).
No, they don't. The radioactive element ionizes the air inside the device and causes the air to flow. The air flow causes the smoke particles to be drawn in to be continuously sampled and detected. This is the same way that the ionizing foil detectors are used to indicate radioactivity. The ionized air flow deflects a small strip of foil creating a visual indication that radioactivity is present.
KEK
These batteries work so well! I mever have to worry about replacements. Why is my hair falling out?
See, I knew it. We left the nuclear non proliferation policy for a reason. Now jut think of this upscaled. Imagine having devices with 50 years of energy.
Whew lad!
I'll never have to change the battery in my ceiling fan remote ever again!
u/#highcat
Will it have a "do not swallow" sticker like coin cells have?
They are radioactive ----- Americium-241emits both Alpha and Gamma radiation
Yes lol, but it's ridiculously safer than those coin cells. No acid in it, the current is low so it won't cause burns, which eliminate the two main "battery" harms especially if they become obstructed.
The issue would be the body can absorb elemental nickel, so if it breached a small percent of it is sticking around, and with a 100 year half-life it's never leaving.
But eating a nuclear battery every month would probably be safer from a cancer perspective than living anywhere near the emission cloud of a coal plant.
Law Firm Ad in 2100: "If you bought a nuclear battery and suffer from cancer, you may be entitled to compensation."
How many of them does it take to make a dirty bomb?
Just asking.
For a friend.
Welcome to "the list" greatpumpkin, if you weren't already on it.
Happy April Fool's day.
Article comments were helpful. Apparently this is recycled American aerospace technology from the 1970's. The battery costs $500 and will require hundreds of batteries to do anything useful.
China: "We tested with Fang Fang on usage for Swalwell... He loved it!"
Maximum power draw is in the order of a few dozen microwatts. A microwatt is a millionth of a watt.
Just gonna leave one word………………vibrators 😂
If Elon can put this technology in Tesla batteries…
Integrating an interchangeable solar panel into the roof of the vehicle would be more practical than something that can't even power your phone, let alone a car.
Pacemakers, and other small devices could benefit. Now, just make them in the US so quality can be assured.
The Italians had a nuclear-powered artificial heart in the 70s
In saw a nuclear batter about the size of a 25 gal hot water tank. It was a replica of the none in the space station that powers and heats it. It's solid state and last aboitn75 years in that application. Was told you could build them bigger or smaller. Bury them in control Crete and power a couple hundred times for 50 years on one battery. This was ten years ago I saw this.
I don't think the ISS has RTGs on board. Maybe you're talking about the Mars rovers ?
No RTG on ISS. Here's the full scoop: https://en.wikipedia.org/wiki/Electrical_system_of_the_International_Space_Station
Reminds me of the miniature "nucleaics" that was all the hype in the days of Hardin from the ol' Foundation series from Asimov
when can I get one for my phone