Using Satellites in the Classroom: A Guide for Science Educators.
The function, design, and ground statics ceguirements of the AMSAT-OSCAR ncn-ccmmercial space satellite system are described, and various experiments designed for direct student participation in space communications are provided in this text primarily written for the science educator. Six chapters include:) (1) an introduction to general satellite crtit problems and sclutione, (2) a number of tracking methods_ for ccmputing the positicns of 1 satellites, (3) onboard systems common to most satellites, (4) ai complete descripticn of each of the satellites currently in orbit or planned for the near future, (5) specifics fcr ground stations, and (6) four complete student satellite experiments, 15 detailed prcject outlines, and 19 suggestions for topics and activities. AppendiCes include listings of equipment manufactirers and publishers, as well as a glossary of terms. .(Author/RAO) #31g4g###########*31g#714########*###*######****************7144**714*71444714### * Reproductions supplied by EDRS are the ,best that car be made * * from the original document. * *********************************************************************** U.S. DEPARTMENT OF HEALTH. EDUCATION & WELFARE NATIONAL INSTITUTE OF EDUCATION THIS DOCUMENT HAS BEEN REPRO'. DUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION. ORIGIN''ATING IT POINTS OF VIEW OF. JPINIOkS STATED-4:X) NOT NECESSARi'.Y REPRESENT OFFICIAL NATIONAL I,1 iTITUTE OF EDUCATION POSITION OR PGL:CY USING SATELLITES IN THE CLASSROOM: A GUIDE FOR SCIENCE EDUCATORS Martin R. Davidoff, Ph.D. "PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY
Antennas for Circular Polarization
A formula is derived to give the variation in received voltage when an elliptically polarized antenna is rotated in a plane ransverse to the direction of propagation of the incident elliptically tolarized wave. It is shown that a circularly polarized antenna will pot receive any of its transmitted energy which is reflected from a nighly conducting smooth surface. Conditions that must be satisfied ho obtain an omnidirectional circularly polarized pattern are derived. Experimental results are given.
Good elementary education
Abstract The aim of this study is to identify good elementary education standards that would contribute to the elimination of inequalities in the implementations regarding the utilization -and making it utilized- of the right to elemetary education. Being a descriptive one, this study attempted to identify the definitions and explanations of the right to education in universal documents by a review of literature. The study then attempted to explain the drawbacks concerning the protection and the utilization of the right to education. The study proposes some standards such as accessibility, content, operation so as to eliminate the obstacles hindering the utilization of the right to elementary education.