Hey Mr. Doner you are an absolute lifesaver as I have my board exams in a few weeks and find physicsa really hard as it is an HL subject for me, and your videos are making me easily understand everything. ❤❤❤❤
thanks for these videos! bio and chem (my hl subjects) are my strong areas. physics (sl) has always been tough for me but i feel so much more comfortable and confident after watching your videos. im sure with your help i can bring my physics up to a 7.
Hi, I have ones question about the example about the wavelength when the transition from n=3 to n=2 happens. Why do you multiply the elementary charge? Also, isn't the elementary charge's unit 'C' not J/ev?
it's a conversion technique. He is basically multiplying 1.6E-19 J / eV with 1.9 eV, which would result in the eV's canceling out and leaving us with J. It's like converting 1 minute to seconds. 1 minute * 60 seconds/minutes. There are 60 seconds PER (/) minute, making the conversion factor 60 sec./min.
Hey Mr. Doner you are an absolute lifesaver as I have my board exams in a few weeks and find physicsa really hard as it is an HL subject for me, and your videos are making me easily understand everything. ❤❤❤❤
Great to hear!
One of the best academc decisions of my life was becoming a member of this channel
Thank you. Good luck!
Hey Mr. Doner your videos are life savers!! Thanks
Great to hear!
thanks for these videos! bio and chem (my hl subjects) are my strong areas. physics (sl) has always been tough for me but i feel so much more comfortable and confident after watching your videos. im sure with your help i can bring my physics up to a 7.
Good to hear. Score a 7.
you are the only reason I will pass my mocks
Thank you. Good luck!
you saved my life thank you chris
Do well!
these videos are saving me
Great to hear!
For the first question A & B were both from lower to higher energy levels so why B?
The photon is absorbed so the photon energy must match the energy difference.
Love from turkey man
good work
nice video!
Thanks!
Hi, I have ones question about the example about the wavelength when the transition from n=3 to n=2 happens.
Why do you multiply the elementary charge? Also, isn't the elementary charge's unit 'C' not J/ev?
at what time are you referring to?
it's a conversion technique. He is basically multiplying 1.6E-19 J / eV with 1.9 eV, which would result in the eV's canceling out and leaving us with J.
It's like converting 1 minute to seconds. 1 minute * 60 seconds/minutes. There are 60 seconds PER (/) minute, making the conversion factor 60 sec./min.