00:01
In this video, we want to compare the wavelength of a classical object, a baseball, and the wavelength of an electron.
00:06
So we know from the de broglie equation that the wavelength of any object, whether classical or quantum, is going to be the value of planck's constant divided by the mass times the velocity of the object.
00:16
So if we have a baseball versus an electron, we're going to have a large mass and a large velocity for the baseball compared to electrons have a small, almost zero mass and a small velocity.
00:41
Well, actually, i shouldn't say so.
00:47
One tenth the speed of light, one tenth of something on the order of three times ten to the eighth.
00:57
So that's going to be, let's see, on the order of ten to the seventh meters per second.
01:08
And then a baseball, a classical object typically has a speed, even if it's fast pitched, if you convert the typical pitch speeds to meters per second, it's going to be on the order of like less than 50 meters per second.
01:28
So here this is much larger on the order of ten to the seven meters per second versus 50.
01:33
But if we compare like the mass of a baseball, which in kilograms is about 0 .145 kilograms versus the mass of an electron, which is on the order of ten to the negative 31 kilograms...