Is the color of light from LED dependent on the nature of gas like argon / neon ? It would be great if you could reply sir . Thanks for this great video as always.
There are no gases in a LED. The inert gases you are talking about in the bulb are true, there are gases in 'Filament bulbs' to reduce evaporation of the filament and prevent its oxidation.
My question is: How the phosphor layer reflects yellow light when they are being bombarded by blue light? For eg, leaves appear green because other colored photons are absorbed by them but they reflect green. Please clarify. This is the biggest misunderstanding I have about light.
It absorbs the light from the blue LED and emits in a broad range from greenish to reddish, with most of its output in yellow. This yellow emission combined with the remaining blue emission gives the "white" light, which can be adjusted to color temperature as warm (yellowish) or cold (bluish) white.
What puzzles me is how you get a PN junction with a single material, that is to say, the mixture of group 13 and 15 elements. I am guessing this. That mixing groups 13 and 15 gives you both free electrons and holes, and thus a conducting material. So the result is not a diode, but a conductor in both directions. The free electrons then drop into the holes, and give off EM waves as they would at a PN junction. Anyone agree or disagree?
*these type of channels beed tobcome on top like 10 million. Not somone playing videogames. This channel is sooooo underrated thankyou so much*
Really explanation is too good I don't know why this channel is underrated thanks a lot ❤❤
I am an electrical engineer.
I can surely say that, this type of explanation i never seen.
I knew the concepts but implementation..........
Very easy to understand, thanks for sharing this knowledge.
No words! Fantastic explanation!!
इतने अच्छे विवरण के लिए शुक्रिया!
Mind-blowing explanation sirr....
Thanks 👍 alot
Thank you sir❤❤
U r superb sir... i love uu
Unbelievable explanation
Loved the last part 🙂🔥
Very well presented
This is best lecture i have ever watched regarding led's
That was cool sir
Just luved it!!!! ❤❤
Great explanation
This is amazing. Thanks a lot
Very great explanation. Thank u so much sir
I love you sir ❣️❣️
I am from ethiopia 🙏 for sharing knowledge. አመሰግናለሁ
This is so nice
What elements do we use to dope gallium arsenide,gallium phosphide & gallium Nitride Into p-type & n-type semiconductors
You are one fantastic teacher
Superb
Tq sir
Thanks sir ☺️
Excellent
Awsome
Is the color of light from LED dependent on the nature of gas like argon / neon ? It would be great if you could reply sir . Thanks for this great video as always.
There are no gases in a LED.
The inert gases you are talking about in the bulb are true, there are gases in 'Filament bulbs' to reduce evaporation of the filament and prevent its oxidation.
@@shotoniphone13 Thanks sir
Sir can you please do pyq as well❤️🥺
On further increasing the current the intensity of the light reduces in led , why ?
Increasing the current increases the temperature thus reducing the efficiency
My question is: How the phosphor layer reflects yellow light when they are being bombarded by blue light? For eg, leaves appear green because other colored photons are absorbed by them but they reflect green. Please clarify. This is the biggest misunderstanding I have about light.
It absorbs the light from the blue LED and emits in a broad range from greenish to reddish, with most of its output in yellow. This yellow emission combined with the remaining blue emission gives the "white" light, which can be adjusted to color temperature as warm (yellowish) or cold (bluish) white.
@@ShawnDypxz Did you just answer your own question
Also I thought chlorophyll gave leaves it's characteristic green color
What puzzles me is how you get a PN junction with a single material, that is to say, the mixture of group 13 and 15 elements. I am guessing this. That mixing groups 13 and 15 gives you both free electrons and holes, and thus a conducting material. So the result is not a diode, but a conductor in both directions. The free electrons then drop into the holes, and give off EM waves as they would at a PN junction. Anyone agree or disagree?
Why do the videos have no speed control these days
Can you please fix that
You can control "playback speed" by clicking on the the three dots in top right corner
@@shotoniphone13 Yep
Seems like they finally have fixed that
This is different from last video
Why we need blue light just use yellow led and coat it with blue,
i.e just reverse coating and led
But neither of them are semiconductor..
How do you mean there was no blue leds before 2014 makes no sense to me cause there were obviously.
No, apparently they invented it in the 90s but won the Noble prize for it in 2014.
Can't we just put blue colour on a yellow led
Thank you sir❤
Excellent
Great explanation