It's 2024, and I'm still watching this 11-year-old masterpiece... He's a legend at explaining this topic in just 6 minutes-gosh, I wish I had a teacher like him!!!!

Great questions! 1) It always decays by half, whether you have 80 grams, 10 grams, 4 nanograms, or 2 atoms. 2) When you're down to only one atom left, that one atom is eventually going to decay into the new atom, and then you won't have a single atom left of the old stuff. So you're not going to have half an atom decay, it's all or nothing.

@yashasthana1157

3 жыл бұрын

If individually each atom of said element is unstable and wants to decay. What makes 1/2 atoms wait for the other half to decay during the duration of a half life? why don't they all decay at the same time?

@visible_radiation

2 жыл бұрын

@@yashasthana1157 great question.!

@yashasthana1157

2 жыл бұрын

What I think is happening there is when atoms decay they release particles that turn back some of the decayed atoms into the old stuff by attaching to new decayed nucleus to keep the overall decay rate constant....what do you think? what I meant was the last atom left in the mass would decay immediately and wouldn't take the same half life to decay. concept of half life fails when we have countable atoms...

@Geopholus

Жыл бұрын

​@@yashasthana1157 , It is based on mathematical probability,... so like a roll of the dice. The overall half life is not totally predictable on an atom by atom basis, and though statistically half of the elemental sample has decayed after the period of the half life is complete, You cannot tell on which day, hour, minute, or second anyone of those atoms will decay.

@krishnakatikitala-bw1xo

Жыл бұрын

I have a question if a radioactive nuclide has a huge half life does that mean it's less radioactive when compared to a nuclide which has shorter half life ?

Bravo to you Tyler ... your energy in explaining the concept was superb ... unfortunately I grew up in era where a lot of the professors were quite boring ... almost as if they were reluctant to share the information. People like you give hope for the younger generations. Wish more of your group would use KZread to obtain useful information like this. Thanks.

50% of people actually know about nuclear half-lives The other 50% plays Half-Life

@alexalford7874

9 жыл бұрын

Quietbut_Deadly Well the thing is I knew the game probably got its name from something in science I just didn't know what it was XD

@alexalford7874

8 жыл бұрын

***** lol I don't know

@fabiopalma4429

6 жыл бұрын

I liked the fact that you used capitals in the game's name

@Weltte

5 жыл бұрын

I'm from the latter 50%... Could not stop thinking about it when it came out in class.

@kh-oj4uf

5 жыл бұрын

what about those of us that just do it because we wanna get a good grade on our math hw?

Someone: hey have you heard of half-life? Me: half-life 1 or 2? Someone: what? Me: what?

Thanks, I am in the UK and this has helped me so much. I just wanted to let you know that you are helping people learn all around the world, and frankly you have taught me in 5 minutes what two of my physics teachers couldn't in 5 weeks.

Wonderful representations! I have been confused by my teachers about this concept for a year and even before the exam I still didn't understand that! You are such a genius

Honestly I can’t watch Crash Course.... It’s boring and hard to understand. When I found this channel though, I can now actually learn something without being board or confused. Thank you

@adyan5453

5 жыл бұрын

bored*

I just came here for Half Life and my mission to find Gman

@TheTechCguy

4 жыл бұрын

*Gordon Freeman!*

Tyler you make awesome videos!!!!!! these are extremely helpful for me in my chemistry classes. I've learned more from your videos than my instructors lectures

Where ever you are now sir. I hope everything is good and know you made my chemistry class way easier. Straight Legend!!! 💪🏻🔥🎉

@jensanchez8660

Жыл бұрын

Agree!! This makes soo much more sense then my teacher explanation

Your videos are amazing. You are a teacher by birth I would say! Thank you!

That's true, but I'm only talking about a specific isotopes of Thorium here, Th-234. There are other isotopes of Thorium that have much longer half-lives, up to 14 billion years. So there might not be any Thorium-234 around, but there is plenty of the other types of Thorium. Great question!

Hi. I did chemistry along with microbiology over the summer, so I missed alot of the concepts in chemistry because I focused more on micro. Watching your videos has done wonders for me, very straight and easy to understand.

It's so perfect how the videos you are uploading are helping my review for my chem 102 final!

Bro the way you explain this is beautiful

Great video. You deserve much more than 300,000. just fully underrated content. Thanks again :-)

I was SO LOST without your videos when it came to "solutions and equilibrium" :(

Well explained, i never understood what half life was when they taught in schools, now after watching this video i understand it more precisely and think this is so easy, wish our teachers taught all this just like you!

I got 24 days because I looked it up. Each element that does radioactive decay has a different half life: some are a few seconds, others are thousands of years. There's no way to know what the half life will be unless sometime tells you. And you can definitely go beyond 10: 5, 2.5, 1.25, etc. etc. it cuts in half every time. Does that make sense?

@Geopholus

Жыл бұрын

Love the video. Are you still active on this channel? There has to be some way to calculate !/2 life of elements because they are published, and no one has been around for 4.5 billion years, although i guess with a few years of observation one could calculate 1/2 life even for long half lives, by the rate of radioactive decay. I was also going to point out that You are leaving out the first "T" in the name of element 59 Pro"T"actinium. thought I'd be proactive on that. Could You also do a video about what causes the different kinds of decay. and why half keeps disappearing probabilistically rather than linearly ?

thank you so much! i got really confused with this when my teacher explained it, but watching how you did it really helped. Thanks a ton!!!

Nuclear half life tells us how long does it takes for half life 3 gets release

@kaylaturner4462

4 жыл бұрын

Red Guy is my life

@victortossi8067

4 жыл бұрын

4.5 billion years to half-life 3

This would basically be more of a physics video, but Chemistry and Physics have much in common. Great videos, my friend.

You explain it so well, thanks for clearing things up before my physics test tomorrow.

You are my half life,You saved me during my exams hours🧐

@natgenesis5038

4 жыл бұрын

God Everywhere if you stop using your phone u gonna understand teacher in class-room .

Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.

Dude ur videos are extremely helpful much appreciation!

This Is A Simplistic And Comprehensible Explanation Of Half-Life. Thank You For Your Clarity, I Was Having Quite A Bit Of Difficulty With This Previously.

Tyler making the complicated simple AND not making me feel like a dummy. Thanks Man!

I say keep the paper Tyler. I love the creativity you use and it Is very helpful towards my learning of chemistry

Thank you so much. the way you explained the process was very clear bub and I think this the first time I got the right idea of the process right.Thank you!

Very educational! Thank you so much for educating us about this very tough subject. I learned more than from my science teacher 😆

This video is awesome. I was having trouble understanding half-life but this video made it all clear to me. Thanks 😀

Thanks! This really helped me a lot for my HS chem class. I can tell you enjoy teaching.

Thanks for makin this vid man!, it helped me so much!

Half Life 3 confirmed.

@UnderTheMicroscopeGaming

9 жыл бұрын

yah. ha ha, now if only it were in three minutes.

@EEKProductions

8 жыл бұрын

+Archer R 3 LIKES???////???

@jacobmcrae2154

6 жыл бұрын

half life confirmed doofy

@tortle_hk

6 жыл бұрын

There can only be 2 halves.. think about it

@fazeroblox9779

5 жыл бұрын

The ammount of time it will take for uranium 238's half life is how long half life 3 will be in development.

The best person to explain Chemistry, thank you 🥰🥰

WOW!! Thanks for the explanation!!

We all appreciate what you do.

this helped me sooooo much on my test. Thank You!!

I was wondering why only half of the sample decays, what decides which atoms decay and which don't and was that stat an average or does exactly half the sample decay? Ty for the video

You made it quite easy to understand Half life. Great work!!!!!!!!!!!!!!

How can anyone not understand this after you've explained it so well? Seriously, some high school teachers these days need to take a page from your book.

You're so helpful man ! Thank you so much ! I wish you were my teacher !!!!

but since you can always divide a number by two and it'll never be zero- does that mean a sample can never be 100% converted? also- am i understanding correctly that it takes the same amount of time for a 3 million tons sample to turn into a 1.5 million tons as it does for a 2g sample of the same element to turn into 1g?

@mynameisralfbob2276

5 жыл бұрын

I want to know why only half the sample decays at a time, why not the whole sample like logic is telling me? It’s like time stops for 1/2 of a whole.

@severzz1108

3 жыл бұрын

@@mynameisralfbob2276 because the nuclei can never decay to zero, atleast that's what I think. That's why when you draw the graphs, it will never touch zero because it can't decay to zero. And other numbers could get hard to work with, keeping it simple is 1/2.

Thank you so much I am studying for my physics exam and I desperately need to learn half life as my revision booklet wasn’t helping.Very helpful once again thank you

You are amazing!!!!!!!!!!!!! Thank you for all your youtube posts!

you are the best than all teachers I had

Where do you find the numbers that are in front of the elements?

Thanks bro, I wanna know one more thing, will concentration play a role here? I mean in chemical kinetics we have studied about zero order and first order reactions and about how some of them are dependent upon initial concentration of the reactants and as the amount of reactants decrease, the rate if the reaction also decreases, will this be the case in these Nuclear Reactions too? Although I know you haven't shown the reaction's rate's dependence upon concentration, but still I don't know why its bothering me. Thanks in advance.

Thanks for the very detailed and clear explanation!

How do we know how long each reactions take? You're video is great but I really don't know how you just knew that Th to Pa has a half life of 24 days, or how you knew U to Th has a half life of 4.5 billions year, etc...

@tdewitt451

8 жыл бұрын

+Ashtin Petitt Great questions. Scientists have already figured out those numbers. You can look them up in books or on the Internet.

@fraserwyllie8840

8 жыл бұрын

+Tyler DeWitt yes but how did the scientists figure out those numbers?

@voiceofreasonandlogic2314

8 жыл бұрын

+Fraser Wyllie the magic man in the sky told them

@LevanSturua_Agm

8 жыл бұрын

+Ashtin Petitt, its enough to watch it for short period of time and count the number of atoms that have decayed, and from there you can calculate the lifetime and half-life. all you need to know is the initial number of total atoms in sample and the number of atoms that has decayed during time t. for uranium 238 example, if this time t is even several minutes it will give good estimate of lifetime and half-life. needless to say, the bigger this time t is, and the more atoms you have in sample, the better estimate will be.

@Lara-ul8pu

8 жыл бұрын

+Ashtin Petitt en.wikipedia.org/wiki/Half-life you can see the formula of (t1/2 ) here :D

Thank you for the clear and simple explanation!

Hi what is the usage of half life ? is it better to have bigger half life element for a nuclear reaction or not ? and why? thanks for the video.

great work . thanks for numerous effort

Can you please make a Gamma Decay video? You explain these concepts so clearly and well.

Your ways of teachers is awesome...hat's off

U are my best online tutor

during nuclear decay neutrons turn into protons? so you could actually plus charge any neutron or not in a lab? if so can you also negatively charge a neutron turning it into an anti proton?

Thanks man. I got test tommorow and I had no idea about this stuff.

Soooo where did you get the 24 from

what happens to atoms after time period ends ?

What is special in the structure of the remaining Thorium that enables it to "live" so much longer?

I get how half life works, I don't understand WHY. The question I have is why does exactly half of the material decay, why is the rate not constant or random? What is the reason for a very orderly exponential rate of change?

@Umeshumarani

6 жыл бұрын

Umenemo That is how nature revealed itself to us. All things decay the same way, in relation to their own selves. A=P(1+1/i)^n , the larger the value of i is, you see that the value of A becomes e. No matter what you do, it's always almost equal to e. Things decay in relation to their own size. Half life is a method derived to understand of how things decay, the pattern is the same no matter what and where in time and space as we know. Why, we don't know, that is how it is, it's a pattern and never disproved, perhaps the next Nobel prize if someone can find a way to break the pattern for some matter in some part of the universe.

best teacher ever thank youuuuuu

I learn more from you than my own physics lecture lol

you saved my life, one video at a time XD

Thanks Sir you made me to understand each and every line

Great Job at explaining

Hi +Tyler Dewitt sir, your videos are amazingly helpful, but I just have slight concern about what if we don't know the half life or an element, then how do we solve? Eg. After 24.0 days, 2.00 milligrams of an original 128.0 milligram sample remain. What is the half-life of the sample? How do we solve such a question? Pls help sir.

@Geopholus

Жыл бұрын

You estimate the power of two that brings you from 2 to 128,...i E the inverse of the 1/2 power, which gives You 7 ... 2x2=4 4x2=8,,...etc 2 to the 7th =128 , You subtract one because at the end of the 1st period we are already losing 1/2, so 64 mg after the 1st halving. So we a re left with 1 over 2 to the seventh after 6 periods. So if You start with 128 and are ending up with 2 milligrams, the 1/2 life would be 4 days. because 6 goes into 24 days to equal 4 days. IE after 4 days you have 64 mg, after 8 days=32, 12 days 16mg, 16 days= 8 gms. 20 days=4 gms, and 24 days = 2 mgs. I know,... pragmatic math is tricky even when it seems pretty simple.

@laralara6607

Жыл бұрын

@@Geopholus bro you answered my 6yr old high school question… don’t remember what I did or how I did it but like it’s funny that I’m getting a reply now but like thanks bro

@Geopholus

Жыл бұрын

@@laralara6607 Yeah I figured You long ago finished that class. 50 years later i still remember what i learned about 1/2 lifes of isotopes from High School. Too bad no one has ever figured out that no civilization will keep nuclear waste safe for 4.6 billion years !

Hi. Nice videos ! I would like to know if there is any specific reason for this to be measured this way?

Do you have a video on finding freezing point

Thank you!!! you make it very easy to understand. I am going for a health physics test

BRuhh and we took a week to learn thus. BTW yall doin this for your exam as well ;) good luck...

When the thorium turns to pa is the physical thorium mixed with pa.?

omg this is amazing... i don't comment too much on videos but I have to comment on this one. thank you so much for this sir❤

ok but why do the tines matter when were doing the equation is it EVERYTIME its going in half or does the tine play a roll?

are the neutrons responsible for the atoms being susceptible to the earths gravity? and does the proton have anything to do with making things lighter?(for instance in helium)

this is amazing video....thank u so much sir..... but also try to explain the rate decay because most students are confused to understand just like me.....😊😊😊😊😊😊

I have a doubt at 0:30 ... since thorium has a neutron-proton ratio of 1.6, it is unstable (since a large nucleus requires a proton-neutron ratio between 2 and 2.5 to be stable). Therefore, it must increase its neutron-proton ratio. Therefore, it must undergo proton-neutron conversion right? (and not neutron-proton conversion?)

Awesome dude thank you helping me all the time 😊

Ur the best chemistry teacher

very good video to understand Half Life!

i actually understand you and chemistry!!! thank u!

when half element is decying what other half is doing i mean how other half knew that we have to keep the funtion correct?

Did you make the 24 days up for an example bc a problem the would give it to you right?

The pre-made cards are appreciated.

This is very Helpful

Thanks a lot sir this would help me someday...I'm just curious at half-life process.

sir i have a doubt regarding radioactivity.if uranium has 3 isotopes than the overall radioactivity=sum of radioactivity of each isotope?how?

congracts on a million subscribers. i am that one in a million 🤩

Helped so much! Thanks

You're a great teacher...Than you!

where did you get the 24 days from

@mercedesmaher935

6 жыл бұрын

mohmad shareef Adam no

@isaamthalhath4359

6 жыл бұрын

We got them from da lord

@cgsrsyrdytd1679

5 жыл бұрын

Just made it up

@letha4423

5 жыл бұрын

No clue, I mean it has been way more than 28 days and we're still waiting for half life 3 so I'm stumped.

Its 2020 and today we were learning it mu teacher said: so class do you know anything about half-lives. I was like: Ya it is an awesome game I played both of it The whole class started laughing and making jokes And the teacher got me out of class and now i am here Noice

will the half life times be given in the question?

You are a life saver!!

Great explaination

I don't understand, does this mean it willinfinite amount of time for something to decay completely??just asking.

@rheinferdous3821

6 жыл бұрын

no, it will never decay completely.

Thank u very much! U made everything clearer!