Scientific Amusements in Philosophy and Mathematics: Including Arithmetic, Acoustics, Electricity, Magnetism, Optics, Pneumatics : Together with Amusing Secrets in Various Branches of Science, the Whole Calculated to Form an Agreeable and Improving Exercise for the MindA. K. Newman, 1821 - 276 Seiten |
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Ergebnisse 1-5 von 15
Seite 45
... weight , one of bronze , another of cop- per , and a third of pure tin . These three bodies , when weighed in water , will each lose a different part of their weight the ingot of tin will lose more , and that of copper less , than the ...
... weight , one of bronze , another of cop- per , and a third of pure tin . These three bodies , when weighed in water , will each lose a different part of their weight the ingot of tin will lose more , and that of copper less , than the ...
Seite 46
... weight , leaves the real weight of the goods , called the net weight . In general , an allowance is made for it , at the rate of so much per hundred weight ; and the quantity to be deducted is found by the Rule of Three , as in the ...
... weight , leaves the real weight of the goods , called the net weight . In general , an allowance is made for it , at the rate of so much per hundred weight ; and the quantity to be deducted is found by the Rule of Three , as in the ...
Seite 151
... weight be suspended from the other ex- tremity , so as to stretch it ; this string , when struck , will emit a sound produced by reciprocal vibrations which are sensible to the sight . If the part of the string made to vibrate be ...
... weight be suspended from the other ex- tremity , so as to stretch it ; this string , when struck , will emit a sound produced by reciprocal vibrations which are sensible to the sight . If the part of the string made to vibrate be ...
Seite 153
... weight be suspended at one end of a string of a determinate length , made fast by the other , and if the tone it emits be fixed , when another weight qua- druple of the former is applied , the tone will be the octave of the former ; if ...
... weight be suspended at one end of a string of a determinate length , made fast by the other , and if the tone it emits be fixed , when another weight qua- druple of the former is applied , the tone will be the octave of the former ; if ...
Seite 154
... weight as 4 to 1 . We may conclude , therefore , that two strings , the diameters of which are as 3 to 2 , and the lengths as 1 to 3 , cannot be in unison , unless the weights , by which they are stretched , be to each other in the same ...
... weight as 4 to 1 . We may conclude , therefore , that two strings , the diameters of which are as 3 to 2 , and the lengths as 1 to 3 , cannot be in unison , unless the weights , by which they are stretched , be to each other in the same ...
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amusing arithme arithmetical mean arithmetical progression arranged bability body bottle bottom card thought chances colours combinations concord conductor consequently contain denominator denoted Desire the person diamonds dice divided division double easily eight electricity electrified employed equal equation example expressed figures finger former fourth fraction furlong games running geometrical progression give glass greater gum arabic half hand heaps hour inches kind last place latter liquor MAGIC SQUARES magnet manner marked face married couples matrass merator method multiplied nosegays number of terms number thought observe octave odd number pack phosphorus piece pounds probability of throwing PROBLEM proportion quantity quotient ratio rays remainder root rule of three seen shew shillings solution sound spades square root string subtract things third tion tone major tricity tube unity vibrations whole number wire yards
Beliebte Passagen
Seite 194 - 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, next the hand, .is to be tied a silk ribbon, and where the silk and twine join a key may be fastened.
Seite 242 - In ten or twelve hoiirs afterwards, if the weather be warm, the earth will swell up and burst, and flames will issue out> which will enlarge the aperture, scattering around a yellow and blackish dust. It is not impossible, that what is here seen in miniature takes place on a grand scale in volcanoes ; as it is well known that they always, furnish abundance of sulphur, and also metallic substances.
Seite 195 - At this key the phial may be charged; and from electric fire thus obtained, spirits may be kindled, and all the other electric experiments be performed, which are usually done by the help of a rubbed glass globe or tube, and thereby the sameness of the electric matter with that of lightning completely demonstrated.
Seite 187 - Two small hemispheres of wood are then fixed with cement to the middle of the upper and under sides, centrally opposite, and in each of them a thick strong wire eight or ten inches long, which together make the axis of the wheel. It turns horizontally on a point at the lower end of its axis, which rests on a bit of brass cemented within a glass saltcellar. The upper end of its axis passes through a hole in a thin brass plate cemented to a long...
Seite 17 - That is, in any proportion, either extreme is equal to the product of the means divided by the other extreme; and either mean is equal to the product of the extremes divided by the other mean.
Seite 119 - The head of a fish is 7 inches long, the tail is as long as the head and |- of the body, and the body is as long as the head and tail ; what is the length of the fish ? 9.
Seite 194 - As soon as any of the thunder-clouds come over the kite the pointed wire will draw the electric fire from them, and the kite, with all the twine, will be...
Seite 78 - It may be readily seen, that the pieces, instead of being in the two hands of the same person, may be supposed to be in the hands of two persons, one "of whom has the even number, or piece of gold, and the other the odd number, or piece of silver. The same operations may then be performed in regard to these two persons, as are performed in regard to the two hands of the same person, calling the one privately the right, and the other the left.
Seite 35 - ... farthing for the first nail, two for the second, four for the third, and so on to the twenty-fourth.
Seite 76 - ... four, 555; and so on; for the remainder will be composed of figures of which the first on the left will be the first number thought of, the next the second, and so on.