Conversations on Natural Philosophy: In which the Elements of that Science are Familiarly Explained, and Adapted to the Comprehension of Young Pupils. Illustrated with Plates |
From inside the book
Results 6-10 of 15
Page 166
... vapors and exhalations from the earth , which float in it , and act in some degree as a covering , which preserves us equally from the intensity of the sun's rays , and from the severity of the cold . Caroline . Pray , Mrs. Mrs. B. , is ...
... vapors and exhalations from the earth , which float in it , and act in some degree as a covering , which preserves us equally from the intensity of the sun's rays , and from the severity of the cold . Caroline . Pray , Mrs. Mrs. B. , is ...
Page 192
... vapors and exhala- tions , by which some portion of them are absorbed . Caroline . I have often noticed that an object on the summit of a hill appears more distinct than one at an equal distance in a valley , or on a plain ; which is ...
... vapors and exhala- tions , by which some portion of them are absorbed . Caroline . I have often noticed that an object on the summit of a hill appears more distinct than one at an equal distance in a valley , or on a plain ; which is ...
Page 227
... vapors which are usually formed at those times prevents the other rays from reaching us . Caroline . color ? And , pray , why are the skies of a blue Mrs. B. You should rather say , the atmosphere ; for the sky is a very vague term ...
... vapors which are usually formed at those times prevents the other rays from reaching us . Caroline . color ? And , pray , why are the skies of a blue Mrs. B. You should rather say , the atmosphere ; for the sky is a very vague term ...
Page 241
... vapors that float in it , is called the atmosphere . The height to which the atmos- phere extends has never been ascertained ; but , at a greater height than 45 miles , it ceases to reflect the rays of light from the sun . AIR - PUMPS ...
... vapors that float in it , is called the atmosphere . The height to which the atmos- phere extends has never been ascertained ; but , at a greater height than 45 miles , it ceases to reflect the rays of light from the sun . AIR - PUMPS ...
Page 242
... vapors sus- pended in the air . Their various colors and in - appearances are owing to their particular situa- tion in regard to the sun , to the different re- flection of the sun's rays , and to the effects pro- duced on them by wind ...
... vapors sus- pended in the air . Their various colors and in - appearances are owing to their particular situa- tion in regard to the sun , to the different re- flection of the sun's rays , and to the effects pro- duced on them by wind ...
Other editions - View all
Common terms and phrases
angle appear astronomy atmosphere attraction of cohesion axis ball called camera obscura Caroline centre of gravity centrifugal force circle cohesive attraction concave mirror consequently convex mirror dark degrees diminished direction distance diurnal motion earth eclipse effect elastic Emily equal equator explain figure fixed stars fluid focus force fulcrum geometry glass globe greater heat illustrated lens less lever liquids mechanical power mercury meridian moon motion move Natural Philosophy nature object obliquely observe opaque body opposite orbit particles pass pendulum perpendicular planets plate poles pressure produced proportion pulley pump rays fall rays of light reflected rays reflecting telescope refraction represents resistance retina revolve round right line rise round the sun shadow shines side situated solar solid bodies sonorous body sound space specific gravity sphere spring sun's rays suppose surface tides tion tube understand vapor velocity vibrations weight whilst wind