@northhamptonshire

I cannot say how much I am thrilled by this series which goes behind the scenes and sets the stage for all the wonderful physics we now take for granted.

@arjunsigdel8070

I am looking forward for similar chronological series in development of General Relativity. From Maxwell theory, to Lorentz transformation, to Poincare works, to Einstein Miracle year, to Minskowski Spacetime to GR to black hole to Gravitational wave.

@cewkins721

Great video once again! The derivation of laws seems fairly simple yet very meaningful, the implications of electron orbits and how they behave was surely a very impactful discovery for the field

@semidemiurge

Exceptionally well done. Thank you

@Sep-n7w

How about a detailed video on Larmor's formula? I have always wondered how the emission process of accelerated electrons can be described mathematically starting from Maxwell's equations.

@sphakamisozondi

This channel deserves more subs and viewer count

@timothygolden5321

Very nicely done. Great details that put this piece beyond the usual regurgitation. Yet you buried nothing in the process. In the moment I feel more convinced than ever. Thank you for being so straight forward and for digging deeper too. Perhaps there is also an openness in your position that helps this content, for myself anyways. It is presented more as a discovery than a dictate.

@dougr.2398

Your videos are all excellent in both the history and mathematical components of physics and explain the physics thoroughly as well.   Only slight adjustments to some pronunciations of names and words are noted to be needed, but no cultural slur is intended.  The value of the content far exceeds minor slips in form

@PedroFerrr

Absolutely wonderful video as always, Jorge, thanks! One detail: I thought that Bohr's papers already mentioned the application of his theory to He+ spectra as well (with data from solar observations, I think)? Congrats again!

@digguscience

Bohr's explanation of the atom is indeed very impressive.

@philoso377

Page 2.38 there are two but one kind of electric energy state that a moving point charge may produce, either inductive and radiative energies. 

Conditions that govern a moving charge is radiative or inductive are:

(A) a (monopole) point charge displacement in 1 or 2D (linear circular or orbit) do not produce radiation, it only INDUCE electrostatic B field cannot radiate.

(B) (dipole) two, opposite poles point charge displace / vibrates in 2D produces radiation. Such as a dipole antenna serving mobile phone found on tower top. 

(C) a (monopole) point charge displacement in (2+1)D such as helix trajectory around a B field core. Such as cyclotron radiation found in astronomy. 

Orbiting electron around a nucleus is under (A) above, 1, 2D displacement do not radiate. 

However when the atom vibrate being or under stimulated, it drag its electron along into the vibration, and the vibrating vector is summed into the electron’s orbit. The orbit changes from 2D into 1+2D, containing axial component, and that radiates. 

Fortunately the radiated energy is derived from the excitation source and not from electron orbit decay. 

It is not necessary to invent new physics on this example.

@awkonradi

Thank you for publishing this video.

@ratman4200

Another banger, thanks Dr :3

@michaelchapman5548

Wonderful series. Thank you for producing these videos.

@kushagra64

The 2pi in the Bohr’s postulate always seemed really arbitrary, like how did he managed to get that? But now I finally got an answer…(except I haven’t really studied Hamiltonian mechanics just yet soo it will still take sometime for me to truly understand it…)

Coincidentally, today I also gave an exam of atomic structure!

@hedgehog3180

The derivation for Bohr's hydrogen atom is one of my favourites and his model is on my student cap :)

@philoso377

Photo on page 5:10 is more natural to me as they all pay attention at the camera. However Bohr’s head image is too small to be real even accounting for his second roll location .

@luudest

12:45 What is here meant by total energy of the electron? Does the total energy consists of potential and kinetic energy?

@DavidMFChapman

Thank you for this. It must have been an exciting time to be a physicist.

@toufeeqsiddique7520

Will you tell me which software did u use to make this beautiful animation along with this complex equation?