Light: its properties and effects |
From inside the book
Results 1-5 of 19
Page 21
... as distance increases , and even its kindly influences can hardly be felt at the boundaries of that system of worlds of which ours is a part . The direct light of the sun has been estimated to be 72 22 THE SUN . equal to that of 5563.
... as distance increases , and even its kindly influences can hardly be felt at the boundaries of that system of worlds of which ours is a part . The direct light of the sun has been estimated to be 72 22 THE SUN . equal to that of 5563.
Page 22
... equal distance from each pole , move at a rate of rather more than a thousand miles per hour , while the other parts move with diminished velocity as they approach the poles . RISING AND SETTING OF THE SUN AND STARS . 23.
... equal distance from each pole , move at a rate of rather more than a thousand miles per hour , while the other parts move with diminished velocity as they approach the poles . RISING AND SETTING OF THE SUN AND STARS . 23.
Page 32
... equal to the light of one candle placed at the distance of twelve feet from the object , and consequently the light of the sun is more than 300,000 times greater . The lunar rays , when collected in the most powerful mirrors , have no ...
... equal to the light of one candle placed at the distance of twelve feet from the object , and consequently the light of the sun is more than 300,000 times greater . The lunar rays , when collected in the most powerful mirrors , have no ...
Page 41
... equal and similar strings perform exactly 100 vibrations in a second , they will produce each equal waves of sound , and these waves will con- spire to produce an uninterrupted sound , double of either of the sounds heard separately ...
... equal and similar strings perform exactly 100 vibrations in a second , they will produce each equal waves of sound , and these waves will con- spire to produce an uninterrupted sound , double of either of the sounds heard separately ...
Page 53
... equal to the angle of incidence . B A C A Let A A in the above figure be a bright surface , B the ray of light falling obliquely on it , and C the re- flected ray in this case , it is apparent that the angle 54 BURNING MIRRORS . BA is ...
... equal to the angle of incidence . B A C A Let A A in the above figure be a bright surface , B the ray of light falling obliquely on it , and C the re- flected ray in this case , it is apparent that the angle 54 BURNING MIRRORS . BA is ...
Other editions - View all
Common terms and phrases
ACHROMATIC TELESCOPE AHAZ Ajalon ancient appears atmosphere beam beautiful blue bright bright waves brilliant BURNING MIRRORS called candle carbonic acid cast clouds colour convex convex lens dark degrees direction discovered distance distinctly Divine earth effect emitted equal eve ang exposed feet figure firmament fishes flower formed Gibeon glass globe glorious glory gracious green heaven horizon hues impression inch insect instance inverted Jesus lens Levator palpebræ superioris Lord luminous body magnified Memnon microscope miles minute moon morning move nature night objects observed opaque Orinoco particles PHOSPHORESCENCE placed plants prism produced rainbow rays of light reflected refracting telescopes refraction Remphan resembling retina rising rocks says seen shadow ship sight sounds space stars statue of Memnon substance sun-rise supposed surface telescope Thaumatrope things transparent traveller unto vast vibration visible white light word world of darkness yellow