31 Days of Notable Women- Henrietta Swan Leavitt, astronomer


stars at nightHenrietta Swan Leavitt performed her research from an observatory’s photographic plate collection. Using the plates, she determined a star’s magnitude. There was no standard for ascertaining magnitudes at the time, so Leavitt devised a system, using “the north polar sequence” as a gage of brightness for stars during her investigations. This was quickly recognized by the scientific community as an important standard and in 1913, was adopted by the International Committee on Photographic Magnitudes.

Source: http://www.womanastronomer.com/hleavitt.htm

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s