Young's double slit problem solving | Mechanical waves and sound | Physics | Khan Academy

[@chloes1308]

absolute life saver. the amount of lightbulbs moments I had were insane.

[@VG__]

2:35 thankyou for precise clarity of concepts. 5:42 mathematically 6:28 ✨

[@qianweijia1]

I love how you shifted the waves to illustrate the changes in theta if we change d.

[@r9tube]

Incredible. This is exactly the explanation I needed. Thanks

[@primodernious]

exept that the model is wrong. its based on the generally flawed asumtions used in all the examples. the light have to interfer with itself before the mutiple bands can go trough the slits. teh bands does not form after the slits but before they go trough. its the tearn in the photostream that create the interference pattern and the slit itself act like a mirror to create the tear.

[@Pili.222]

Thank you very much!! this help's me a lot with my physics exam of tomorrow! continue like this, greetings from Uruguay

[@bettercallbhanu]

Thank you sir :) This video helped me a lot.

[@denisskenderovic3707]

Bless you, Khan Academy !

[@Austin-vc1tj]

4:28 shoootttt I know how to do that

[@shihoritsukiyomi]

Bravo! Way to go! Now I can try solving my tutorial based on your helpful explanations. Thank you, sir! :D

[@jrbird1983]

flamehazeshinigami good luck

[@jaygiri8700]

you are simply awesome ...plz keep on doing these sorts of videos

[@fortun8diamond]

Love that last demo there

Thank you sooo much!

[@poiuwnwang7109]

The demo towards the end makes things intuitive. nice.

[@abrar_tonmoy]

Best demonstration ever

[@999GHz]

Shooot, this is a pretty great video!

[@yasmin_liyanaupm8201]

You guyss save my entire life😩

[@tianboqu7469]

Jesus you are just better than my professor at the university, thanks so muuuuuuuch

[@ardopalanjian3998]

Man explanation is awesome! Iam grateful thank u

[@KaVangsArea]

Thank you so muchhhh

[@harjeetoo603]

interesting it gets

[@asafvirin2181]

Shooot that was a good video, helped to understand it loads even though when my teacher started drawing this on the board my brain melted into butter and I immediately lost all concentration

[@sahilaliqureshi4302]

Wow its amazing concept you( sir)mr khan

[@Knob126]

TYSM

[@GiftedTutors1]

Thanks Al lot

[@د.عبير-ي5ي]

Hi all, Just wondering!, if we divided nm over nm, units should cancel out right?!. It means we should not get a degree but radian instead?!. Then we can convert it to degree. Thank you Khan for your simple and brilliant videos!!!.

[@BANANACHAD-]

Thank you Dav sir love khan academy 💜💜💜

[@smartchronon24]

Thanks a LOT!

[@arshisid47]

wonderful explanation1

[@barerahasan7487]

dude i freaking love you

[@Chris-yx1cy]

Hi, i am from Germany and i have a question. At First i want to thank you for your video, i think you explained the topic very well. When i calculate arcsin( 300/1300) i get an angle of 43.81 degrees. At the setupmenu i set the angle to "deg", but either way, neither rad (Kind of obvious), nor "gra" have worked.

[@kLuMzyOwl]

because it's 700/1300 not 300/1300

[@jrbird1983]

gotta use the right ratio

[@dexterization]

Thanks for the explanation

[@maxwonkyi2546]

Shooooot😂😂😂😂...always gets me . Lop.. he's a fun teacher

[@houstoncambodia1]

Shooooot

[@youssefosama8590]

Thanks khan academy .I got a question today which tells me calculate theta for the fourth bright line so shall i substitute by m 3 or 4 and also if it was dark?

[@blackmask22605]

sri lankan

[@senijakaleta6205]

thank you, i love you

[@chll-hub7642]

can yiu explain this our teacher said sin and tan are more or less equal for this calculation/ formula

[@bobmanyo1]

cheers man

[@itsJaysPOV]

sheeewwwwwtt. much love, thank you!

[@32kirby32]

Question: how does 32.6 x 3m get 1.92 m? That part went over my head 5:20

[@puertofcknrico4961]

It's 3m × tan32.6° that gives 1.92m

[@msagent619]

By using the formula x = (D x lambda)/d, I'm getting a 0.3m difference. Why can't this formula work?

[@yhgvjhvkjhfvh3450]

+Jayanta Chatterjee the formula you are using is only valid when D is much larger than d and when the angle is very small. in this example, the angle is relatively large

[@akshitnarula8846]

It valid for small angles only

[@manavshah6811]

which software do you use for creating these videos?

[@ArunJoseMathew]

It's much easier than my text. :)

[@primodernious]

i have solved the double slit experiment. i know why the interference pattern emerged in the first place. the light intefer with itself to create a tear in the photostream that create ripples that produce the interference pattern. if the bouncing photons does not collide with the incomming photostream the interference pattern never forms.

[@jrbird1983]

what happens if the wavelength is increased. I have a theory that a detector would either add or subtract energy to the photon coming through making the distance from the screen crucial in the efforts of obtaining an interference pattern when turned on. Since the photon is so low mass is wouldn't need much to upset the frequency of interference. I just don't know they equations well enough to intelligently explain myself. the closer the screen is the less you see of the pattern. So if at 3 meters you see seven lines at 2m you would only see 5 or something like that. As in the light curtain effects the particle/wave to minusculy that its almost undetectable except in the strings themselves which fundamentally changes the orientation from wave to particle. Like i said, its just a theory and i hope that makes sense to someone else with a better understanding. Thinking outside the box.

[@nigamonwheels145]

Sir y are you not use the e of frinch width beta is equal to lamda into L by small d

[@beyondemotionsvibe2408]

🔥

[@sidritvejseli704]

2 words : thank you

[@gopalmajumdar4140]

Suppose the slit distance is 1km instead of 200nm... What will the answer be then? Exact same question just that value changed

[@TheOnlyMachineHerald]

How can i know the value of sin-¹(700/1300) or tan32.6°

[@alexcanha6826]

I love you

[@jamilabrown8347]

Isnt "d" the size of a single split, and 'a' the distance of slit seperation? CZ Im pretty positive about that

[@remusomega]

+jamila Brown These are called variables

[@nigamonwheels145]

The answer I got was 1.61 cm

[@GENIUS4896]

Why can't I solve this using the formula x = (lambda * distance ) / distance of separation of the holes

[@agent-sz2qj]

this is not the same Theta used in the "double slits explanation video" , so why is he applying the same "sin Theta formula" ?

[@kenrickchannata1055]

when he does the inverse 700/1300, why doesnt he change the number to metres first?

[@JeremySteamsack]

because it is a unitless ratio. namometers/nanometers is unitless since the units cancel. you'd be correct to change them to meters if you the units arent held constant between the two distances. ie. if you had one distance in terms of nanometers, and the other in picometers then you would want to convert these to the same units. it does not matter if you choose to convert to picometers, nanometers, or meters as long as they are the same. you would get the same results each time. Cheers

[@naveenrawat6278]

Why take so much of effort bro ??

[@TheMudfly80]

I thought it should be 1500nm?

[@nigamonwheels145]

No the Ans is right

[@HarshRajAlwaysfree]

It was just the calculation of fringe width It's too easy , you should have discussed something more advance

[@mayukhintesarislam306]

Too bad i wasted almost 2 decades of my life without learning these things

[@niccoavinta]

If the d goes down

[@theson22788]

THE HELL MAN THE stupid home only give me d and landa . what ???

[@sanjuansteve]

I’ve been saying since 2013 that it seems extremely obvious that all electrons and photons are in orbit with a dark matter particle. Based on Fermilab and other recent findings, I now think electrons are made of an electron neutrino entangled in orbit with a dark matter muon neutrino, explaining their erratic orbits around nuclei and explaining superposition and uncertainty. I think photons are a pair of electrons entangled in orbit together in apparent an axial or helical polarizable wave-like movement depending on the direction of their rotation as they travel. This explains the double slit experiment for example and the speed of the rotation explains electromagnetic wavelengths (and visible colors, etc). What do you think of this Mudfossil University video?: ‘’Light Duality Solved and Seen’’, Sep 29, 2022

[@sanjuansteve]

Does the double slit polarize the light?