Measuring Wavelength of Light with a Diffraction Grating - PRACTICAL - A Level Physics

[@hrishiv]

A point for anyone reading this in future, the d in the formula is the distance between the lines in the grating, the D used to find the angle is the distance from the grating to the screen, same as in the Double Slit experiment - this is why I tend to use L to denote the distance to the screen, due to the clash in letters.

[@lukemcellin8736]

Ur the free science lessons guy for a level physics

[@silrana7166]

"Thank you," Me: *No, thank you my saviour*

[@abualasif]

lol fr

[@herantd]

The best explanation out there!

[@aletheabarretto3624]

Exactly!!! I was so confused before

[@Opls0707]

Best explanation of Diffraction Grating !

[@aletheabarretto3624]

a blessing to my life

[@laylaalghizzi1391]

that was really helpful, thank you :->

[@PhysicsOnline]

You're welcome!

[@riazrabia]

Great explanation 👏😍 Thanks alot

[@TigerSHe]

really nice video, explainations are on point! thanks!

[@minxxdia1132]

explained everything, thankyou!

[@FernandoMoreiraR]

great summary!!

[@barkley2824]

what's his brand of pen that ink looking neat

[@iccyt2780]

When finding the mean value, do I divide the second order by 2

[@asmitaroy2243]

thank you this really helped

[@samuelmathieson249]

hey guys I am a bit dum and kinda need to do a rightup for this thing and can somone help me find what the Independent Variables Dependent Variables Controlled Variables are any help is appreciated =)

[@alexandrucoca9770]

god is good god is great

[@christinaholm3789]

Didnt explain if h1, h2 and h3 have different lengths

[@Kiyotaka_Narumi]

Best one out there

[@TheCitygear]

아주 깔끔한 설명! Good!

[@usman.hqu1]

Why we are using dsin@ instead of 2dsin@ . what is the logic behind This explain please 🥺

[@PhysicsOnline]

Have a look here: kzbin.info/www/bejne/gmK6fqmKnqanaqc

[@pkbharti460]

sir theory main mil sakta hai'

[@shayhan6227]

This is nice and all but how in the heck did humanity create precision diffraction gratings to get precision measurements of the wavelengths from? This is a like a catch 22 paradox of science history.

[@jashanpreet863]

What would the variables be for this?

[@PhysicsOnline]

You could try it with different colour lasers, or perhaps keep the same colour laser and move the screen a different distance away each time.

[@canadianbro9327]

d is the what?

[@samsonfisher4578]

2:05

[@TheChristianOrthodox]

Can we measure a height of an object using this theory by adding all h1, h2....

[@Otaythechug]

Abeba k Haile you could just take a angle measuring apparatus and point at the object from ground to get the angle, then measure the ground distance from the apparatus to the object the calculate for height of object using tan. Best for larger objects like buildings.

[@christinaholm3789]

If you dont have an apparatus, what about just throwing a stone from the roof to calculate the height, however might come with certain false marginals. I know that laser apparatus calculates the time back the laser reflects to it's sensors or something in that area, but then I wonder how does the apparatus prevent the reflection of getting another angle when it for example hits the wall?. Do they put a mirror at the wall or something set to the same angle?, but that might be rather dangerous.

[@gayandesilva3180]

Thank you

[@baptistedoyon4110]

What is d in the formula?

[@ilysmjac]

reciprocal of the lines per metre (N) of the diffraction grating used -- so 1/N

[@greeneggsandham7950]

I looked into the laser beam and I'm blind in one eye, you could of told us....

[@joea-497kviews2]

green eggs and ham same here

[@AnthonyMoody]

lets sue him!

[@AnthonyMoody]

great vid!

[@jaankhokhar]

URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I cant do the practicals in school and the results from my classmates are not available. What other way is there of finding that data without doing the experiment.

[@toffeesky6227]

make it up lol

[@kemiosuide313]

you could do it at home, you can find all sorts of science equipment online

[@lucyjo2331]

I love those pens what are they???

[@PhysicsOnline]

Pilot V-Sign pens in medium - slightly too thick to make normal notes with but I've been very happy with them for these videos.

[@lukemcellin8736]

All bow down to our lord and savour

[@KyserMontalvoC]

whats d?

[@rishi_d_mango]

Kyser Montalvo width of the slit

[@zaiiify8689]

The split separation

[@AnandKumar-nq3wp]

Thanks

[@momi5656]

plz there are a demonstration of " nh=dsino " ?? and thank you :-)

[@avtaras]

Wtf man just copy Greek letters to your clipboard This is absolutely shambles

[@imperialrecker7111]

@@avtaras lol dsino 😂

[@rahilsiddique6950]

not all heroes wear cap thanks a lot !!

[@mikeyparker8207]

So to be the idiot in the room what goes on the graph. There a lot of workings out so a graph doent seem needed

[@ahmadaoude1513]

anyone from gems Cambridge ? lol

[@hiteshchoudhary9871]

Land mera

[@dpdeadpool2486]

Sorry sir I can't understand u r speaking style. 🤕🤕

[@pkbharti460]

sir theory main mil sakta hai'