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demonstrate greenhouse effects
3 x AA batteries give lasting service
print area is 293 x 90 (the rest is tuck area)
1 degree gradations from -10 to +50 C
Night Sky Projection Kit Garden Measurement demonstrate greenhouse effectsA wonder ful gift for yourself or anyone else who appreciates science or beauty because this is both. A battery powered lamp (AA batteries required) sits on a platform around which you assemble maps of northern or southern hemispheres. The light then projects stars and constellations onto walls and ceilings. Star charts and instructions included. The effect is awesome, like being outdoors on a clear starry night but without the discomfort. A popular
