Τι λένε οι χρήστες - Σύνταξη κριτικής
Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
Άλλες εκδόσεις - Προβολή όλων
acting action amount apparatus applied atmospheric atmospheric pressure axis balance barometer barrel becomes body bottom branch called centimetres centre of gravity closed column compressed consists containing corresponding cylinder denote density depth described determined diminishes direction displaced distance effect employed equal equilibrium experiment expressed extremity fall feet figure Find follows force give given glass grammes greater hence horizontal immersed inch increases length less lever liquid lower machine mass means measured mercury motion moving nearly observed obtained opening opposite parallel passes piston placed plane portion position pressure principle produce proportional pump pump-barrel quantity raised receiver represented reservoir resultant rise scale shows side solid space stroke suppose surface temperature tion tube unit upper upward usually valve velocity vertical vessel volume weight
Σελίδα 41 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Σελίδα 214 - The resistance which is opposed to a pump rod in raising water, is ~equal to the weight of a column of water whose base is the area of the piston, and...
Σελίδα 86 - If a vessel full of water, closed on all sides, has two openings, the one a hundred times as large as the other, and if each be supplied with a piston which fits exactly, a man pushing the small piston will exert a force which will equilibrate that of a hundred men pushing the piston which is a hundred times as large, Fig. 54.— Principle of the Hydraulic Press. and will overcome that of ninety-nine.
Σελίδα 67 - ... (or the length of the pendulum), the acceleration at any point is g sin *This is sensibly proportional to x so long as a? is a small fraction of r; but in general it is not proportional to x, and hence the vibrations are not in general isochronous. To obtain strictly isochronous vibrations we must substitute for the circular arc a curve which possesses the property of having an inclination whose sine is simply proportional to distance measured along the curve from the lowest point. The curve...
Σελίδα 48 - ... the centimetre as the unit of length, the gramme as the unit of mass, and the second as the unit of time.
Σελίδα 115 - When two or more substances are mixed without either shrinkage or expansion (that is, when the volume of the mixture is equal to the sum of the volumes of the components), the density of the mixture can easily be expressed in terms of the quantities and densities of the components.