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Many American elementary teachers use the book in their classes. [9] Students have put on thousands of plays and musicals based on the book to educate their parents and communities about the importance of saving the rainforest. The Great Kapok Tree received a Charlotte Award from the New York State Reading Association. [10]
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens , but some newer types of projectors can project the image directly, by using lasers .
Handheld projectors involve miniaturized hardware, and software that can project digital images onto a nearby viewing surface. The system comprises five main parts: the battery, the electronics, the laser or LED light sources, the combiner optic, and in some cases, scanning micromirror devices. First, the electronics system turns the image into ...
Because they use small lamps and the ability to project an image on any flat surface, LCD projectors tend to be smaller and more portable than some other types of projection systems. Even so, the best image quality is found using a blank white, grey, or black [ citation needed ] (which blocks reflected ambient light) surface, so dedicated ...
A video projector is an image projector that receives a video signal and projects the corresponding image onto a projection screen using a lens system. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc lamp ), Xenon arc lamp , metal halide lamp , LED or solid state blue, RB, RGB or fiber-optic lasers to ...
Between 1989 and 2009, students participating in coin drives, bottle collections and other simple fundraising activities have raised $6.25 million to purchase and protect more than 400,000 acres of rainforest [15] and other endangered habitat in partnership with conservation organizations like The Nature Conservancy, Conservation International and Nature & Culture International.