19 July 2002 Compiled by Shawn Carlson. Edited and designed by Sheldon Greaves, with additional artwork
by Brian Mansfield.

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A Note From the Editor by Sheldon Greaves       Validation of Satellite Measurements Using Simple, Inexpensive Handheld Instruments By Forrest M. Mims III* LED fluorescence microscopy in theory and practice by Ely Silk* Secrets of Guerrilla Scholarship by Sheldon Greaves* Science 'Toons by Brian Mansfield   *Papers presented at the Citizen Science Conference in Philadelphia, 28-29 June 2002.   Mind of a Theorist Tensor Than Before by George E. Hrabovsky Hands-On Physics In Search of Radiation Momentum by John Dooley Eye on the Sky Beyond Starhopping by Michael Hotka   Some Insect Traps Wiring and Reading Numeric Keypads     SAS Tee Shirts are still available! Get yours today! Special Blow-out Sale: The Amateur Astronomer for $25.95 (regular price: $39.99)!! Wolfram's Mathematical Explorer is still available!     International Shorebird Survey       More comments on the Conference in E-Bulletin Backscatter.     Published weekly by: Society for Amateur Scientists 5600 Post Rd. Suite 114-341 East Greenwich, RI 02818 401-823-7800     Copyright 2000, 2001, 2002 by the Society for Amateur Scientists, all rights reserved. Legal Notice and disclaimer