Reflections of a Star

From: Walter Sanford (
Date: Sat Jul 28 2001 - 14:41:09 PDT

Dear SnackTalk:

In the online activity, "Reflections of a Star - How to Find the
[Apparent] Angular Diameter of the Sun," the Sun's image is reflected from
a mirror through a bottle of water onto a white projection screen. The
idea seems simple enough, although there is no mention of the purpose of
the bottle of water--why not simply reflect the Sun's image directly onto
a projection screen? Enquiring minds want to know!

Sunny Days & Starry Nights!
Walter Sanford, Planetarium Teacher
Sandburg Planetarium

Walter Sanford, Director Carl Sandburg Middle School
Center for Sky Awareness 8428 Fort Hunt Road
Sandburg Planetarium Alexandria, VA 22308
Fairfax County Public Schools Work (voice): 703-799-6169
E-mail: Home (voice/fax): 703-765-9392
AMS Project ATMOSPHERE Atmospheric Education Resource Agent
SCSA, Geosystems, & Camp T-Equity - URL:

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