An Elementary Text-book of Physics: Wave motionC. Griffin, 1909 |
Συχνά εμφανιζόμενοι όροι και φράσεις
air column amplitude of vibration angle of incidence antinode centre characteristic circle column of air complete vibration compression and rarefaction constant decreases denote density determined diatonic scale direction disc distance elasticity Experiment feet per second fundamental mode half segments harmonic modes increases instant interval line of transmission longitudinal vibration longitudinal wave motion loudness mass per unit maximum metres per second middle point mode of vibration musical sound n segments node normal position note given observer particle paths of vibration period of vibration periodic motion pitch prong propagation of sound pulse ratio reflecting surface refraction rod fixed set in vibration shown in Fig simple harmonic motion simple harmonic vibration sound in air sound waves source of sound strain string vibrates surface of separation tension transverse vibration travels tube tuning fork unit length velocity of propagation velocity of sound vibrating body vibration frequency vibratory motion wave front wave length zero
Δημοφιλή αποσπάσματα
Σελίδα 77 - When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media.
Σελίδα 66 - The intensity of the illumination at a point due to a given source is inversely proportional to the square of the distance of the point from the The proof may be put rather differently thus.
Σελίδα 128 - In an organ pipe, resonance generates a standing wave with a pressure node at the closed end and an antinode at the open end.
Σελίδα 77 - I. The angle of reflection is equal to the angle of incidence. II. The incident and the reflected ray are both in the same plane, which is perpendicular to the reflecting surface.