Intro to radioactive decay | Physics | Khan Academy
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- Опубликовано: 21 июл 2024
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During radioactive decay, an unstable nucleus (the "parent") spontaneously changes to become a different nucleus (the "daughter"), emitting radiation in the process. The nuclear radiation emitted during radioactive decay is high energy, ionizing radiation. Nuclear radiation is potentially dangerous to living things but also has many beneficial applications. Types of radioactive decay include alpha, beta, and gamma.
Sections:
00:00 - Intro
00:22 - Chemical reactions don't change elements
01:35 - Nuclear composition
02:11 - Isotopes
04:00 - What is radioactivity?
05:38 - Example of radioactive decay
06:40 - Ionizing radiation
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you are the best physics and chemistry teacher on the planet
Thank you so much for making such a clear and un intimidating intro to the basics of this stuff
Oh this is going to be a great series! Thx!
Great video! I have a physics exam tomorrow so this is greatly appreciated.
Same as I
MAY ALLAH BLESS YOU SIR......
very well explained! excited for the other parts to this series :)
We have made even Anti-Matter, gold who??
Make more chemistry videos!!
What makes them unstable. You mentioned because they're heavy and then you mentioned that there's also unstable ones that are not heavy. I don't get the actual reason 😅? Is it because of the ratio(protons/neurons) for both heavy and none heavy nucleus?or there's something else?
amazing..
cool
❤❤❤
this is a good video
lee
So... stupid fantasy question: if we could control the process and stop it when we want could we achieve the alchemist's dream of turning lead into gold?
Actually yes, with the right equipment you can basically make any atom into another, in this case that you are saying lead is 82 protons and gold is 79 and if you Can somehow make 3 of the protons in for example neutros using gama decaying you’ll end up with a gold atom. The problem is that making atom by atom is an extremely un efficient method and at the end you end up wasting more resources and energy than the value you end up gaining in gold.
Radioactive decay cannot be controlled. It happens when it happens.
However, nuclear reactions like fission and fusion can be controlled because they depend of the right pieces coming together. But that’s more useful for producing energy than gold.