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Physics |
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Action and Reaction "This will be understood, when we consider that the reaction of b is just equal to the action of a, and that each of the other balls, in lke manner, ac, and react, o n the other, until the motion of a... |
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Air pump This apparatus represents the single barrel of the double-acting pump of Bianchi. ... |
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Air-Pump "The general scheme of Geisler's pump is shown here. A and B are pear-shaped glass vessels connected by a long narrow india-rubber tube, which must be sufficiently strong in the body (or strengthened... |
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Air-Pump "The general scheme of Geisler's pump is shown here. A and B are pear-shaped glass vessels connected by a long narrow india-rubber tube, which must be sufficiently strong in the body (or strengthened... |
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Air-Pump "This was invented in 1865 by H. Sprengel. The instrument, in its original (simplest) form, consists of a vertical capillary glass tube a of about 1 mm. bore, provided with a lateral branch b near it... |
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Aneroid barometer This barometer depends upon the changes in form of a think metallic vessel partially exhausted of air, as the atmospheric pressure varies.... |
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Apparatus for verifying Torricelli's Theorem This figure represents an apparatus frequently employed for illustrating some of the consequences of Torricelli's Theorem.... |
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Aquapult "A small portable force-pump."-Whitney, 1902... |
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Arithmetical lever A simple apparatus called the arithmetical lever for illustrating the laws of parallel forces. ... |
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Attraction "Two cannon balls, when suspened by long cords, so as to hang quite near each other, are found to exert a mutual attaction, so that neither of the cords are excatly perpendicular, but they approach ea... |
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Atwood's Machine "Atwood's Machine. This difficulty has however been overcome by a curious piece of machinery invented by Mr. Atwood. This consists of an upright pillar, with a wheel on the top. The weights A and B... |
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Atwood's machine "Machine designed by Atwood to allow the measurement and calculation of the velocities of falling bodies at various points accurately and easily." —Quackenbos 1859... |
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Backward movement of discharging vessel This experiment illustrates the law of action and reaction, which asserts that momentum cannot be imparted to any body without equal and opposite momentum being imparted to some other body.... |
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Balance In the common balance there is a stiff piece of metal called the beam, which turns about the sharp edge of a steel wedge forming part of the beam. The scale pans rest upon the hooks of the wedges.... |
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Balance for Purposes of Accuracy A balance of great delicacy with the glass case that contains it.... |
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Balancer toy illustration The stability of the "balancer" depends on the fact that, owing to the weight of the two leaden balls, the center of gravity of the whole is below the point of support.... |
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Balloon with car and pressure The car in which the aeronauts sit is usually made of wicker-work of whalebone. It is sustained by cords attached to a network covering the entire upper half of the balloon.... |
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Baroscope An instrument used for indicating changes in atmospheric pressure.... |
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Beam Strength "When the load is uniformly distributed on a beam of any cross-section, it will sustain a load twice as great as when the load is applied in the middle between the supports." — Hallock, 1905... |
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Beam, cylindrical "The maximum safe load in pounds that any cylindrical beam is capable of sustaining at the middle when its ends merely rest upon supports, is equal to four times the cube of its diameter multiplied by... |
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Bianchi's air-pump A general view of the air-pump apparatus formed by Bianchi.... |
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Boyle's law for expanding air This apparatus is used to prove Boyle's Law which describes the relationship between the product pressure and volume within a closed system as constant when temperature remains at a fixed measure; bot... |
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Bulb, glass "An air thermometer consists essentially of a large glass bulb at the upper end of a tube of small but uniform bore, the lower end of which dips into colored water." — Avery, 1895... |
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Buoyancy Chambers Buoyancy chambers, hydrostatic principle. Illustration of an unsuccessful scheme for a perpetual-motion device.... |
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Burst bladder A glass cylinder is open at the bottom, having a piece of bladder or thin indian-rubber tightly stretched over the top.... |
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Clipart ETC is a part of the Educational Technology Clearinghouse and is funded by various grants. Produced by the Florida Center for Instructional Technology, College of Education, University of South Florida. Email the project manager.