Systematic Education: or, elementary instruction in the various departments of literature and science ... By W. Shepherd, J. Joyce, and L. Carpenter, Volume 2 |
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Results 1-5 of 48
Page 5
... rays of light to our eyes ; and that which , by its transparency , is always invisible ; such as the atmospheric air , with which we , and all terrestrial bodies , are perpetually surrounded , and also other gases , hereafter to be ...
... rays of light to our eyes ; and that which , by its transparency , is always invisible ; such as the atmospheric air , with which we , and all terrestrial bodies , are perpetually surrounded , and also other gases , hereafter to be ...
Page 33
... rays of the sun at a greater height than about forty - five miles , this therefore is usually considered as the limit of the sensible atmosphere . It has been demonstrated by Mr. Cotes , that if the altitudes in the air be taken in ...
... rays of the sun at a greater height than about forty - five miles , this therefore is usually considered as the limit of the sensible atmosphere . It has been demonstrated by Mr. Cotes , that if the altitudes in the air be taken in ...
Page 53
... Rays of Light --Reflexion of Light -Different Refrangibility of the Rays of Light The Rainbow Vision and Structure of the Eye - Op- tical Instruments · Microscopes — Telescopes · Camera Obscura --Magic Lantern -- Phantasmagoria ...
... Rays of Light --Reflexion of Light -Different Refrangibility of the Rays of Light The Rainbow Vision and Structure of the Eye - Op- tical Instruments · Microscopes — Telescopes · Camera Obscura --Magic Lantern -- Phantasmagoria ...
Page 55
... rays from the flame of this candle . Another circumstance respecting the rays of light is , that they move always in straight lines , as is evident by the impossibility of seeing through a crooked tube . As light proceeds from a centre ...
... rays from the flame of this candle . Another circumstance respecting the rays of light is , that they move always in straight lines , as is evident by the impossibility of seeing through a crooked tube . As light proceeds from a centre ...
Page 56
... rays proceeding from a point , is called a pencil of rays . By a medium is meant any pellucid or transparent body , which suffers light to pass through it . Thus air , water , and glass , are media . ― - Of Refraction . Where rays of ...
... rays proceeding from a point , is called a pencil of rays . By a medium is meant any pellucid or transparent body , which suffers light to pass through it . Thus air , water , and glass , are media . ― - Of Refraction . Where rays of ...
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action affinity agriculture alkalies ammonia Amphibia animals appear ascertained association astronomy become benevolence bodies called capital centre chemical affinity circumstances colour combined compound conductor connected connexion consists contains degree denominated derived direction distance earth eclipses ecliptic effects electricity employed equal excite external feelings fluid genus glass habit happiness heat Hence important increase individual influence instance Jupiter kind labour light Linnæus magnet means mental philosophy mercury metals mind mineral Mineralogy moon moral motion muriatic muriatic acid Natural Philosophy nature nitric acid object observed operations orbit oxydes oxygen pains Philosophy planets pleasures potash principles produce properties proportion proposition quadrupeds quantity racters rays readers referred respect retina rule of duty sensation sense sensible species specific gravity stars substances sulphuric acid supposed surface syllogism term tion truth tube vessel virtue wealth whole words