Thank you for all of your videos. I've never found anything that teaches how to science with math and interesting topics all in one video. You are a very kind person to share all of this with the world.
Thank you so much!!! I have been looking for the explanation to this query since so long :) Explained beautifully. Its amazing to see how activation energy affects a process so significantly.
It's relativity...it's the outside forces that held a molecule together that has changed and not the energy of the molecules and that's the reason...no need for a 30min presentation
It is just a matter of time for Gold to go Iridium then Rhenium and so on. Of course neither you or me nor the whole human existence as we perceive it will ever notice such an event but anyway it will happen, particularly for Gold as it is monoisotopic and a odd-numbered element. Good video, though. You have a new follower.
Remember I have asked you this before? Ah! Now I understand. Thank you very much! Although, I still wonder why not all gold turned into iron, with so many high energy cosmic rays out there that could provide the AE....?
Love your work. No frills, honest physics & maths. Great presentation and cadence. And the line "let's call it 1.5 for cash" was the icing on the cake.
9:30 you draw graph N vs Z and previously the curve of real stability was above the N=Z line so the point (Z/2, N/2) should be under the line you draw. Correct me if I'm wrong. PS. Thank you for those videos, they are great. You make physics easy and interesting :-)
It emits an electron in the process (as well as an antineutrino which isn't important), conserving the neutral charge. In other words, the neutron (0) decays into a proton (+1) and electron (-1), both of which have opposite charges with equal magnitude, which sum up to the original 0 charge.
Quantum tunneling will do that eventually to all nuclei heavier than Fe 56 but the timescales required for this to happen are ridiculously long, think of something like 10^1500 years.
Is the final computation correct? I fear it is not, since the same result for the binding energies of the two daughter nuclei would have been obtained when the two being far apart. I think you missed the coulomb barrier between the two daughter nuclei, which is what I fear gives the actual activation energy.
So due to the tunnel effect all elements heavier than Fe-56 will eventually decay into Fe-56. Good to know, I shall not buy large stocks in iron and then try sell in the future.
you made a mistake the binding is not defined as the energy that holds the nucleons togehther.I use to think the same thing as it's intuitive but physicists define it instead as the amount of energy need to sperate the nucleans to infinty.
Thank you for all of your videos. I've never found anything that teaches how to science with math and interesting topics all in one video. You are a very kind person to share all of this with the world.
I'm well past the point in my life where I need to study this stuff, but I love geeking out to your videos just the same. Excellent work! Thanks
just find out about this channel... it's a gold nugget!
Very well explained, thank you.
Greetings from Germany
The learning possible through these videos is tantamount to that of a real classroom
Agreed. Coming from someone working not in physics, but in a highly theoretical subject not far from it. His red carpet of reasoning is perfection.
Perahps my favorite video on RUclips!
Excellent stuff. It might be worth considering avoiding repeating things and make the video flow better.
The whole way through I was like, what about fissile elements! Then zing! Cliffhanger! Can't wait for the next episode, thanks!
Isn't physics just so much more captivating than fiction?
wow - what an amazing video
Good work Dr ^_^
Thank you so much!!!
I have been looking for the explanation to this query since so long :)
Explained beautifully.
Its amazing to see how activation energy affects a process so significantly.
Well I don't know about iron, but everything I touch almost immediately turns to sh*t, so yeah... this effect surely exists.
This vid is amazing because even if you dont understand what the terms themselves do, you can easily understand how they cancel out
2 1/2 minutes in and I have subscribed. Excellent presentation of information so far.
Who says we know they don't? It wasn't long ago we thought bismuth was stable.
It's relativity...it's the outside forces that held a molecule together that has changed and not the energy of the molecules and that's the reason...no need for a 30min presentation
Brilliant work! You make it easy to understand and visualize. Great series!
But can you spin straw into gold, Rumplestilskin?
The nuclei decays only if it is radioactive...
Fascinating!
It is just a matter of time for Gold to go Iridium then Rhenium and so on. Of course neither you or me nor the whole human existence as we perceive it will ever notice such an event but anyway it will happen, particularly for Gold as it is monoisotopic and a odd-numbered element. Good video, though. You have a new follower.
Remember I have asked you this before?
Ah! Now I understand. Thank you very much!
Although, I still wonder why not all gold turned into iron, with so many high energy cosmic rays out there that could provide the AE....?
Love your work. No frills, honest physics & maths. Great presentation and cadence. And the line "let's call it 1.5 for cash" was the icing on the cake.
11:30
Why iron? What's so special about iron that it has the highest binding energy per nucleon ?
Brilliant explanation!
wow great explanation
Can anyone provide the link to one of his videos explainig binding energy and mass defect
thanks
Still watching in 2020. So inspiring! Thank you!
Can anyone link this binding energy video he keeps referring to?
9:30 you draw graph N vs Z and previously the curve of real stability was above the N=Z line so the point (Z/2, N/2) should be under the line you draw. Correct me if I'm wrong.
PS.
Thank you for those videos, they are great. You make physics easy and interesting :-)
I know where is an error in my thinking. On the graph N > Z because this point is already above the line N=Z so N/2 > Z/2
Sorry for my mistake
How does a Neutron automatically gain a + charge?
Quark exchange... though I don't really know the reason why quark exchange does happen
It emits an electron in the process (as well as an antineutrino which isn't important), conserving the neutral charge. In other words, the neutron (0) decays into a proton (+1) and electron (-1), both of which have opposite charges with equal magnitude, which sum up to the original 0 charge.
Quantum tunneling will do that eventually to all nuclei heavier than Fe 56 but the timescales required for this to happen are ridiculously long, think of something like 10^1500 years.
What's the criteria for stability? What's the criteria for instability?
Wouldn't there exist any tunnel effect anyway? why?
The nucleus with highest binding energy is Ni-62, not Fe-56.
I believe that he is not talking about isotopes. Because then Fe-58 would also come into consideration.
Please consider the fact that the term is "binding energy per nucleon" and not binding energy.
where is the next video ?
hey your voice sounds familiar, have you been on periodicvideos?
To me he sounds like singingbanana.
where are you??
nature is beautiful.
Thank you so much for your lectures on RUclips... Greetings from INDIA :)
So this rule basically works out like a mirror of surface tension? Interesting.
Thank you :-)
What kind of pencil or marker is that ?
It's a Berol FINE Colour felt tip pen.
Is the final computation correct? I fear it is not, since the same result for the binding energies of the two daughter nuclei would have been obtained when the two being far apart. I think you missed the coulomb barrier between the two daughter nuclei, which is what I fear gives the actual activation energy.
So due to the tunnel effect all elements heavier than Fe-56 will eventually decay into Fe-56. Good to know, I shall not buy large stocks in iron and then try sell in the future.
you made a mistake the binding is not defined as the energy that holds the nucleons togehther.I use to think the same thing as it's intuitive but physicists define it instead as the amount of energy need to sperate the nucleans to infinty.
Nick Moore Which is why he defined the binding energy as a negative energy at 4:35. You need to pay attention.
Is there a reason as to why you cross your sevens and zeds? Is it a physics thing?
The increase in surface area is creation.