Laboratory Physics: A Students Manual for Colleges and Scientific SchoolsGinn, 1903 - 403 pagini |
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Pagina 97
... Collimation . Set the cross wires exactly upon some well - defined point , and rotate the telescope upon its own axis . If the cross wires move away from the point , they must be brought back partly by adjusting the reticule held by ...
... Collimation . Set the cross wires exactly upon some well - defined point , and rotate the telescope upon its own axis . If the cross wires move away from the point , they must be brought back partly by adjusting the reticule held by ...
Pagina 140
... collimator slit S , by the lens L. The light passing through the collimator falls upon the mirror attached to the tuning fork to be rated , and from this it is reflected to the view telescope . The various parts are to be so adjusted ...
... collimator slit S , by the lens L. The light passing through the collimator falls upon the mirror attached to the tuning fork to be rated , and from this it is reflected to the view telescope . The various parts are to be so adjusted ...
Pagina 142
... collimator from the flash- ing mirror , by narrowing either one of the slits or by increasing the arc through which the mirror swings . In general , if c is the number of swings per cycle , and n , to the nearest integer , is the number ...
... collimator from the flash- ing mirror , by narrowing either one of the slits or by increasing the arc through which the mirror swings . In general , if c is the number of swings per cycle , and n , to the nearest integer , is the number ...
Pagina 224
... collimator may be provided to give a better object than the upper window edge . With these addi- tions the instrument approaches the spectrometer in form , and should be used in the manner described in Exercise CVII . CVI . ADJUSTMENT ...
... collimator may be provided to give a better object than the upper window edge . With these addi- tions the instrument approaches the spectrometer in form , and should be used in the manner described in Exercise CVII . CVI . ADJUSTMENT ...
Pagina 225
... collimator is commonly attached to the base of the instrument , and can be rotated about this axis only with the instrument as a whole . For most purposes it is required that the axes of the telescope and collimator should intersect the ...
... collimator is commonly attached to the base of the instrument , and can be rotated about this axis only with the instrument as a whole . For most purposes it is required that the axes of the telescope and collimator should intersect the ...
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Alte ediții - Afișează-le pe toate
Laboratory Physics: A Students Manual for Colleges and Scientific Schools Dayton Clarence Miller Vizualizare completă - 1903 |
Laboratory Physics: A Students Manual for Colleges and Scientific Schools Dayton Clarence Miller Vizualizare completă - 1903 |
Laboratory Physics: A Student's Manual for Colleges and Scientific Schools Dayton Clarence Miller Vizualizare fragmente - 1932 |
Termeni și expresii frecvente
adjustment ammeter ampere angle apparatus axis balance bands beam body bridge bulb calibration calorimeter candle power cell centimeter circle circuit coefficient coil collimator condenser connected constant convenient correction cross wires deflection density described in Art determined difference direction distance electromotive force equal error eyepiece fork galva galvanometer glass gravity horizontal Hygrometer illuminated index of refraction indicated instrument intensity lens light liquid M₂ magnet mass measured mercury meter method micrometer microscope mirror needle number of vibrations observations ohms pendulum placed plane plate position potential pressure prism produced quantity R₁ R₂ radius ratio reading rheostat rotation scale screen screw shown in Fig slit solution specific heat specific rotation spectrometer standard substance surface t₁ tangent galvanometer telescope temperature thermometer tion torsion tube turn velocity vernier voltmeter volume wave length weight Wheatstone's bridge Young's modulus zero
Pasaje populare
Pagina 54 - When the sum of the moments tending to cause rotation in one direction is equal to the sum of the moments tending to cause rotation in the opposite direction, the object is in balance.
Pagina 266 - Two solutions are required: one, the reducing solution, should be prepared at least a week before it is used, and it may be made in large quantity and kept in stock with advantage ; the other solution is to be prepared when used. REDUCING SOLUTION Distilled water 700 ccm Pure sugar (loaf, granulated, or rock candy) ... 80 g When dissolved add Alcohol 175 ccm Strong nitric acid (sp. gr. 1 .42) 3 ccm Add water to make 1000 ccm For silvering, the mirror may rest face up on the bottom of a suitable dish;...
Pagina 11 - ... the reports from the different corps of correspondents are very nearly identical and how often the final figures arrived at by the individual members of the board agree with each other. These State estimates, which are in percentages, are then multiplied into the acreages for their respective States. The sum of these products is divided by the sum of the acreages giving the percentage for the entire crop for the United States. METHOD OF ISSUING REPORTS. Reports in relation to cotton 'thus prepared...
Pagina 191 - ... ice will extract heat from the atmosphere to fuel its transformation into liquid. The heat needed to melt a substance is referred to as the heat of fusion (sometimes called the latent heat of fusion) and is defined as the calories required to change 1 gm of the substance, or the Btu to change 1 Ib of the substance, from the solid to the liquid state without changing its temperature. It is called latent because at a specific temperature, the melting point, the energy of the applied heat is utilized...
Pagina 117 - The viscosity of a substance is defined as the tangential force per unit area of either of two horizontal planes at unit distance apart, one of which is fixed while the other moves with unit velocity, the space between the planes being filled with the substance.
Pagina 120 - The density p of a substance is the ratio of its mass to its volume and may be expressed in units of pounds per cubic foot (lb/ft3) or kilograms per cubic meter (kg/m3).
Pagina 51 - In other words, the sum of the momenta before impact is equal to the sum of the momenta after impact ; this is the principle of the Conservation of Momentum.
Pagina 51 - ... velocity after the collision. Hence, in a perfectly elastic collision the relative velocity is reversed in direction but unaltered in magnitude. The degree to which a pair of colliding bodies approach perfect elasticity is expressed by their coefficient of restitution, e, which is defined as the negative ratio of the relative velocity after collision to the relative velocity before collision.
Pagina 117 - ... at unit distance apart, one of which is fixed while the other moves with unit velocity, the space between being filled with a viscous substance.
Pagina 324 - It is defined as 107 ergs, or as the work done in 1 second by a current of 1 ampere in flowing through a resistance of 1 ohm.