Public
- Public
- Network
- Groups
- Popular
- People

Demonstration of light waves being compressed or stretched as on object moves towards or away from earth. This is called "blue shifting" and "red shifting", respectively.

Download link

Demonstration of light waves being compressed or stretched as on object moves towards or away from earth. This is called "blue shifting" and "red shifting", respectively.

Notices where this attachment appears

Erin M. May, PhD (_astronomay@mastodon.online)'s status on Tuesday, 17-May-2022 09:42:31 CEST Erin M. May, PhD
in reply to

Now we don’t always visually *see* the star moving, but what we do see is the impact of the star being pulled towards and away from us on the *color* of the star.
In the Universe, things that are moving away from us are “redshifted” and things that are moving towards us are “blueshifted”.
This is similar to the Doppler shift you hear in sound when a siren is moving towards/away from you. Things moving *towards* you are compressed, and for light this means it turns blue!
#SpaceTalkTuesday (6/)

In conversation Tuesday, 17-May-2022 09:42:31 CEST from mastodon.online permalink

tiflolinux.org - GNU Social is a social network, courtesy of tiflolinux.org. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.

All tiflolinux.org - GNU Social content and data are available under the Creative Commons Attribution 3.0 license.