Easy Experiments in Physical Science, for Oral Instruction in Common Schools
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In our eReader you can find the full English version of the book. Read Easy Experiments in Physical Science, for Oral Instruction in Common Schools Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Easy Experiments in Physical Science, for Oral Instruction in Common Schools
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To quickly assess the difficulty of the text, read a short excerpt:
21). JSTovv poui water into the bowl carefully, so as not to disturb the penny. The penny will very soon Fig. 21. come into view (at b), no change having occurred in the position of the vessel, penny, or eyes.
Remember that we see the penny just as we see every thing else, by light thai comes from it to our eyes. "With- out the water, this light, coming up over the edge of the bowl, goes ahove the eye; for this reason we do not see the penny. But when it has to come up out of water the liglit i...s bent where it enters the air, and then, coming over the edge of the bowl, can enter our eyes and enable us to see the penny.
Ex. 93. — Let a convex lens — a spectacle glass can be used with success — be placed in the opening in the shutter of the dark room. The hole should be no larger than the lens : it can be made smaller, if need be, by cut- ting a hole of the right size in a piece of card-board, and then tacking this card over the larger hole in the shutter.
Let a screen be made of thin white muslin stretched over a wooden frame.
What to read after Easy Experiments in Physical Science, for Oral Instruction in Common Schools?
You can find similar books in the "Read Also" column, or choose other free books by Cooley, Le Roy C. (Le Roy Clark), 1833-1916 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
21). JSTovv poui water into the bowl carefully, so as not to disturb the penny. The penny will very soon Fig. 21. come into view (at b), no change having occurred in the position of the vessel, penny, or eyes.
Remember that we see the penny just as we see every thing else, by light thai comes from it to our eyes. "With- out the water, this light, coming up over the edge of the bowl, goes ahove the eye; for this reason we do not see the penny. But when it has to come up out of water the liglit i...s bent where it enters the air, and then, coming over the edge of the bowl, can enter our eyes and enable us to see the penny.
Ex. 93. — Let a convex lens — a spectacle glass can be used with success — be placed in the opening in the shutter of the dark room. The hole should be no larger than the lens : it can be made smaller, if need be, by cut- ting a hole of the right size in a piece of card-board, and then tacking this card over the larger hole in the shutter.
Let a screen be made of thin white muslin stretched over a wooden frame.
What to read after Easy Experiments in Physical Science, for Oral Instruction in Common Schools?
You can find similar books in the "Read Also" column, or choose other free books by Cooley, Le Roy C. (Le Roy Clark), 1833-1916 to read onlineMoreLess
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