Half-life | High school chemistry

Half-life | High school chemistry | Khan Academy

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3 ай бұрын

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Half-life is the time required for half of a radioactive sample to decay. Half-life cannot be changed-nuclei cannot be forced to decay faster or slower. Additionally, we cannot predict when an individual nucleus will decay. However, when analyzing a large sample containing many nuclei, half-life allows us to predict how much of the sample will remain after a given amount of time. This is useful for radiometric dating.
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Пікірлер: 20

@subjectnether959 3 ай бұрын

"Gordon doesnt need to hear all this, he's a highly trained professional."

@UNITEDNATIONSAREAWESOME 3 ай бұрын

Gordon doesn’t need to hear all of this, he’s a highly trained professional

@user-pg2zc4oi6r 3 ай бұрын

Clicked cause of the game, stayed out of curiosity. Wasn't dissapointed.

@A_Good_Boy. 3 ай бұрын

do you know? they copied the main place from counter strike half-life game in the current Loki season 2

@Nived_69 Ай бұрын

@@A_Good_Boy. i thought they just had a copy of the stun baton

@Mahesh_Shenoy 3 ай бұрын

‘Please, leave me alone until after the experiment!’

@Urstrulyharsha.srk2277 3 ай бұрын

Lol

@ibraheimsalam4345 3 ай бұрын

Well explained

@CristuelCasto 3 ай бұрын

It's a great game.

@ipalomino2182 3 ай бұрын

Nice video, thanks. But how do we know that the half-live of C14 is 5730 years? Radioactivity was discovered on the 19th century, right?

@christinejackson6630 3 ай бұрын

True, but the decay of any radioisotope follows an exponential decay curve as shown at 8:42. So, even if we’ve observed a sample for less than one full half-life, we can measure how much of the parent remains after that time. Then we can extrapolate the rest of the decay curve and determine the radioisotope’s half-life.