Chirp!
  • Login
Chirp! is a GNU Social instance for the Cooley and Sekula families and their friends.

  • Public

    • Public
    • Network
    • Groups
    • Popular
    • People

Twp pics of Henrietta Swan Leavitt

Download link

https://cdn.fosstodon.org/media_attachments/files/112/730/744/944/558/392/original/03636fdcc06dd779.png

Notices where this attachment appears

  1. AkaSci 🛰️ (akasci@fosstodon.org)'s status on Friday, 05-Jul-2024 07:06:28 UTC AkaSci 🛰️ AkaSci 🛰️

    Happy Birthday to American astronomer Henrietta Swan Leavitt (born July 4, 1868, Lancaster, MA, died Dec 12, 1921, Cambridge, MA), who discovered the relationship between the luminosity and the period of Cepheid variables - pulsating stars that vary in brightness in precise periods ranging from a few days to several months.
    The period–luminosity relationship, now known as "Leavitt's law," led to methods to calculate vast celestial distances.
    https://en.wikipedia.org/wiki/Henrietta_Swan_Leavitt
    #Leavitt
    1/n

    In conversation about 5 months ago from fosstodon.org permalink
  • Help
  • About
  • FAQ
  • Privacy
  • Source
  • Version
  • Contact

Chirp! is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.

Creative Commons Attribution 3.0 All Chirp! content and data are available under the Creative Commons Attribution 3.0 license.