#DOPPLER EFFECT FORMULA PLUS#

This door is acting like a speaker, and it's acting a like moving speaker, because the door's moving. But no, because this is theįrequency the door hears. And then I should hear that frequency too. That's the way I remember whether I should add or subtract it here.

#DOPPLER EFFECT FORMULA PLUS#

I want the plus sign,īecause a big numerator gives me a larger frequency. So the frequency this door experiences should be bigger than the frequency that's actually emitted by If I'm moving toward the source, or if the source is moving toward me. So I ask myself this- I could never remember this as a student. Speed of sound up top, plus or minus for a moving observer. f-door is gonna equal the frequency that the wave actually has. And if we use the Doppler Effect formula. Because I wanna know what the door hears. Now, doors can't hear anything, but if this door was a person, what frequency would it hear? It wouldn't be f-scream. I wanna know what sound this door would hear if This door is gonna actĪs a moving observer. I'm gonna think of theĭoor as an observer first. So the frequency that I hear- I'm gonna have to do this I wanna know, what frequency would I hear? So I'm gonna have to use What sound would you hear,Īfter this sound wave reflected off the doorĪnd got back to you? Would you hear the same frequency that you're screaming at? Would you hear a higher frequency? Would you hear a lower frequency? Exactly what frequency would you hear? Let's figure it out, it's a This sound is gonna come over to here, it's gonna reflect off the door. And I'm going to call thatįrequency of the scream. I'm like, 'Oh, no!' I start screaming at a certain frequency. You're looking at thisĭoor coming towards you. He doesn't know where he's throwing it, but he ends up throwing He's so mad, he takes theĭoor, he rips the door off. Because he's never wiping down his sweat off all the equipment.

Because there's thisīig, beefy bodybuilder.

Doppler effect formula