From 7:00, when Mitch starts explaining how to find the length, you dont actually have to calculate the angle and then multiply it with the radius but the method is similar. You could use the theta equation (theta = lambda/b) and implement it in the length equation (length = radius * theta) to form the equation (length = radius * lambda/b). Substitute the values and multiply the answer by two.
ManageBac has the OSC Study app, which is what I've been working on. Yes, some of what I have here on TH-cam is on the OSC Study app, but the app features 8000 flashcards from SMARTPREP, 24 OSC revision guides, as well as 3000 videos from me! Much much more than what's on TH-cam. Plus the OSC Study app has it for 10 subjects - we're adding more soon as well.
hello sir, when we calculate the width of the central max, you used the formula: l = r*theta, but could you also use tan (theta) = 1/2 of the central max over 3.5m?
It does technically, yes, but over small angles, it's very nearly a straight line. So it's a great approximation and completely appropriate in the case of single slit diffraction. It makes things much simpler and works well.
![Multiple slit and thin film interference [IB Physics HL]](http://i.ytimg.com/vi/VjwdhGQ77aI/mqdefault.jpg)
![Multiple slit and thin film interference [IB Physics HL]](/img/tr.png)
![Resolution - Rayleigh criterion [IB Physics HL]](http://i.ytimg.com/vi/itw6o2JJhwQ/mqdefault.jpg)
From 7:00, when Mitch starts explaining how to find the length, you dont actually have to calculate the angle and then multiply it with the radius but the method is similar. You could use the theta equation (theta = lambda/b) and implement it in the length equation (length = radius * theta) to form the equation (length = radius * lambda/b). Substitute the values and multiply the answer by two.
That drop at 7:31 gave me a fright
Me too. Hope you recovered ok :) Cheers, Mitch
Thank you saved me from failing !!!
So happy I could help! Cheers, Mitch
Thank you!
You're welcome!
is this the same program that is present on managebac?
ManageBac has the OSC Study app, which is what I've been working on. Yes, some of what I have here on TH-cam is on the OSC Study app, but the app features 8000 flashcards from SMARTPREP, 24 OSC revision guides, as well as 3000 videos from me! Much much more than what's on TH-cam. Plus the OSC Study app has it for 10 subjects - we're adding more soon as well.
1:15.
Rotate your screen 180 degrees.
Now look to the top left :o
I see youre a man of culture as well
hello sir, when we calculate the width of the central max, you used the formula: l = r*theta, but could you also use tan (theta) = 1/2 of the central max over 3.5m?
but doesnt r(theta) give you a curved length? should we not use the trig formulas instead?
It does technically, yes, but over small angles, it's very nearly a straight line. So it's a great approximation and completely appropriate in the case of single slit diffraction. It makes things much simpler and works well.
the joke at the beginning was actually funny lol
So glad you liked it! :)
7:47 radians not meters
Thank you for that - you're correct, I should have written radians, and not metres.
he corrected it after
bro every time you drop the calculator I get a heart attack 😭
Sorry, I am pretty clumsy sometimes :)
W video