RE: In UK atheists considred more moral than theists.
August 29, 2018 at 7:15 am
(This post was last modified: August 29, 2018 at 7:46 am by I_am_not_mafia.)
I think a good example is a musical note. Huggy could be asking how we could know that the Note A exists if we are not able to hear that frequency.
Radio waves have a frequency as well as sound waves. Given a length of string under tension, there is a continuum of frequencies that it can vibrate at depending on its tension. There is nothing special about it vibrating it at 440 times a second compared to say 430 hz. And in fact historically, instruments did vary in how they were tuned until it became standardised. In the same way red is deemed to have the dominant wavelength of 625–740 nanometres.
With the string, we can see that the more we tighten it the faster it vibrates, and this will include 440Hz. Same with light. Although we can't change the speed of light we can change the length of the wave. We know that the wavelength can be changed continuously from being really long to really short. We use this in lots of applications so it's more than just a theory.
Radio waves have a frequency as well as sound waves. Given a length of string under tension, there is a continuum of frequencies that it can vibrate at depending on its tension. There is nothing special about it vibrating it at 440 times a second compared to say 430 hz. And in fact historically, instruments did vary in how they were tuned until it became standardised. In the same way red is deemed to have the dominant wavelength of 625–740 nanometres.
With the string, we can see that the more we tighten it the faster it vibrates, and this will include 440Hz. Same with light. Although we can't change the speed of light we can change the length of the wave. We know that the wavelength can be changed continuously from being really long to really short. We use this in lots of applications so it's more than just a theory.
