Elements of PhysicsLongmans, Green, 1919 - 221 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acceleration acting aqueous vapour atmospheric pressure axis barometer body Boyle's law bulb called calorimeter cell centimetre centre of gravity coefficient column concave consequently convex convex lens copper cylinder density diameter direction disc displacement distance dynes earth electricity energy equal equilibrium example expansion Find focal length fork frequency friction ft./sec Hence hole horizontal hydrometer inches increases index of refraction kinetic latent heat Leclanché cell lens Let us suppose light liquid magnet mass measured mercury metal metre mirror molecules motion moving object ohms particles passes pendulum piece piston placed plane plate pole position produced pump radius Réaumur scale refraction represented resistance result rotated scale screen screw shown in Fig side solid specific gravity spherometer spring straight line surface temperature thermometer thread unit velocity of sound vertical vessel vibrations volume wave weight wire
Δημοφιλή αποσπάσματα
Σελίδα 21 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Σελίδα 159 - In myopia, or short sight, the focal length of the eye is too small and parallel rays are brought to a focus in front of the retina.
Σελίδα 21 - 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 134 - The sine of the angle of incidence bears a constant ratio to the sine of the angle of refraction.
Σελίδα 1 - The straight line or distance be-tween the centres of the transverse lines in the two gold plugs in the bronze bar deposited in the office of the Exchequer...
Σελίδα 8 - If a number of forces acting at a point can be represented in magnitude and direction by the sides of a closed polygon taken...
Σελίδα 131 - All practical photometers are based upon the fundamental law that the intensity of illumination on a given surface varies inversely as the square of its distance from the source of light...
Σελίδα 137 - Let the mirror be rotated through an angle a about an axis through O perpendicular to the plane of the paper and let OR and OG be the positions of the reflected ray and normal after the rotation.
Σελίδα 159 - Usually, when the eye is at rest, it is adjusted so that the image of a distant object is in focus on the retina.
Σελίδα 1 - ... one ten-millionth part of the distance from the North Pole to the Equator, measured on the meridian of Paris. This is called the 'metre