Endless Amusement: A Collection of Nearly 400 Entertaining Experiments in Various Branches of Science ...

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Carey, 1821 - 216 pagine

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Pagina 60 - Kite. MAKE a small cross of two light strips of cedar, the arms so long as to reach to the four corners of a large thin silk handkerchief when extended ; tie the corners of the handkerchief to the extremities of the cross; and you have the body of the kite, which being properly
Pagina 61 - and wind of a thunder gust, without tearing. To the top of the upright stick of the cross is to be fixed a very sharp-pointed wire, rising a foot or more above the wood. To the end of the twine, is to be tied a silk ribbon, and where the silk and twine join, a key may be fastened. This kite
Pagina 61 - appears to be coming on ; and the person who holds the string must stand within a door or window, or under some cover, so that the silk ribbon may not be wet; and care must be taken that the twine do not touch the frame of the door or window. As soon as any of the thunder clouds come over the kite,
Pagina 61 - attracted by an approaching finger. When the rain has wetted the kite and twine, so that it can conduct the electric fire freely, you will find it stream out plentifully from the key, on the approach of
Pagina 61 - be kindled, and all the other electric experiments performed, which are usually done by the help of a rubbed glass or tube, and thereby the identity of the electric matter with that of lightning completely demonstrated. The Magic
Pagina 61 - pointed wire will draw the electric fire from them, and the kite, with all the twine, will be electrified, while the loose filaments of the twine will stand out every way, and
Pagina 124 - heated by the sun's rays. It is the same before a fire, the heat of which sooner penetrates black stockings than white ones, and so is apt sooner to burn a man's shins. Also beer much sooner warms in a black mug set before the fire, than a white one,
Pagina 134 - good conductor) to pass into the wall (a bad conductor) through those staples. It would rather, if any were in the wall, pass out of it into the rod, to get more readily by that conductor into the earth. If the building be very large and extensive, two
Pagina 135 - course through the air of the room and the bedding, when it can go through a continued better conductor, the wall. But where it can be had, a hammock, or swinging bed, suspended by silk cords equally distant from the walls on every side, and from the
Pagina 133 - The distance at which a body charged with this fluid will discharge itself suddenly, striking through the air into another body that is not charged, or not so highly charged is different according to the quantity of the fluid, the dimensions and form of the bodies themselves, and the state of the air between

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