The Microscope: and Its Revelations |
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Page 65
... substance , which is known as its index of refraction . It follows from the first of these laws , that a ray of ... substances , by the amount of the refractive influence which they exert upon rays passing into them , not from air , but ...
... substance , which is known as its index of refraction . It follows from the first of these laws , that a ray of ... substances , by the amount of the refractive influence which they exert upon rays passing into them , not from air , but ...
Page 67
... substance of which it may be formed ; since the lower the index of refraction , the less will the oblique rays be deflected towards the axial ray , and the more remote will be their point of meeting ; and conversely , the greater the ...
... substance of which it may be formed ; since the lower the index of refraction , the less will the oblique rays be deflected towards the axial ray , and the more remote will be their point of meeting ; and conversely , the greater the ...
Page 140
... into which a beam of ordinary light is made to divaricate on passing through this substance ; or it may be a plate of Tourmaline , or one of the artificial tourmalines composed of the disulphate of iodine and 140 ACCESSORY APPARATUS .
... into which a beam of ordinary light is made to divaricate on passing through this substance ; or it may be a plate of Tourmaline , or one of the artificial tourmalines composed of the disulphate of iodine and 140 ACCESSORY APPARATUS .
Page 183
... substance . But the most common error is that which is produced by the reversal of the lights and shadows , resulting from the refractive powers of the object itself ; thus , the bi - concavity of the blood - disks of Human ( and other ...
... substance . But the most common error is that which is produced by the reversal of the lights and shadows , resulting from the refractive powers of the object itself ; thus , the bi - concavity of the blood - disks of Human ( and other ...
Page 184
... substance . For just as the convexity of its surfaces will cause a transparent cylinder to show a bright axial band , so will the concavity of the internal surfaces of the cavities or tubes hollowed out in the midst of highly refracting ...
... substance . For just as the convexity of its surfaces will cause a transparent cylinder to show a bright axial band , so will the concavity of the internal surfaces of the cavities or tubes hollowed out in the midst of highly refracting ...
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Common terms and phrases
acetic acid achromatic acid adjustment afford angle angular aperture animal Animalcules antheridia aperture appearance archegonia arrangement attached body calcareous Canada balsam cavity cells centre cilia color condenser consists containing convex convex lens corpuscles Crustacea cuticle diameter disk distance distinct Ditto Ehrenberg employed endochrome epithelium examination extra cloth extremely eye-piece fibres filaments fluid focus Foraminifera frustules furnished illumination inch Insects instrument Journal kind lacunæ larvæ layer lens lenses light magnifying power matter Medical membrane ment Microscopist milled head minute mode mounted movement nearly object-glass oblique observed octavo octavo volume ordinary organs particles peculiar plants plate portion present prism Prof rays refraction rendered resembling Rotifera scale seen segments separated shell side slide sometimes species specimens spicules stage stem stomata structure substance surface thickness thin glass tion tissue transparent transverse tube usually utricle Vegetable vessels Volvox whilst Zoophytes zoospores
Popular passages
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