## Measurable wavelength properties

$\lambda=\frac{h}{p}$

Katherine Grillo 1B
Posts: 69
Joined: Fri Sep 28, 2018 12:28 am

### Measurable wavelength properties

Lavelle worked through an example in class about the wavelength of a car moving at a certain velocity. He asked if the car has "any measurable wavelength properties." What does that mean and how do you determine if there are measurable wavelength properties?

Aidan Ryan 1B
Posts: 60
Joined: Fri Sep 28, 2018 12:17 am

### Re: Measurable wavelength properties

He is asking whether any wavelike properties would be visible in the cars movement (everything has wavelike movement). I don't remember the exact answer but there will not be any measurable wavelength properties for anything even close to that big.

Brian Chhoy 4I
Posts: 66
Joined: Fri Sep 28, 2018 12:16 am

### Re: Measurable wavelength properties

I would think he just meant if the car had a wavelength that was big enough to notice and detect while moving. For example, when you did the calculation for the wavelength of a car with a mass of 1.5 * 10^8 kg moving at a speed of 27 m/s, the wavelength would be 1.64 *10^-38, which is really small and not big enough for us to really detect or measure. Compared to the wavelength of an electron moving at 5.3* 10^6 m/s, which has a wavelength of 1.4* 10^-10, and is big enough for us to notice.

Duby3L
Posts: 72
Joined: Fri Sep 28, 2018 12:26 am

### Re: Measurable wavelength properties

The object will not have wavelike properties for objects such as 10^-34 because they are to big too big. I believe the maximum it can be is 10^-18 for it to have wavelength properties.

Rithana Srikanth 3L
Posts: 30
Joined: Fri Sep 28, 2018 12:26 am

### Re: Measurable wavelength properties

"Measurable wavelike properties" just means wave movement that is noticeable/detectable in a lab. The cutoff point for wavelength detection is 10^-18. In this case, since the object is very big, the wavelength wouldn't be measurable.

Jack Hewitt 2H
Posts: 67
Joined: Fri Sep 28, 2018 12:27 am

### Re: Measurable wavelength properties

The car was too large to have "measurable wavelike properties".