The Popular Educator, Volum 6John Cassell, 1855 |
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Side 409
... glasses a very fine thread placed inside the instrument is distinctly seen through the eye - piece when the telescope is illuminated with red light only , but ceases to be visible , if ... glass , the power of LESSONS IN PHYSICS . 409.
... glasses a very fine thread placed inside the instrument is distinctly seen through the eye - piece when the telescope is illuminated with red light only , but ceases to be visible , if ... glass , the power of LESSONS IN PHYSICS . 409.
Side 410
... glasses , which , by removing the rays from their common axis , throw back the focus to the retina . The habit of frequently looking at small objects , and making microscopical observations , has a tendency to bring on short ...
... glasses , which , by removing the rays from their common axis , throw back the focus to the retina . The habit of frequently looking at small objects , and making microscopical observations , has a tendency to bring on short ...
Side 411
... glass , do not possess the property of double refraction , but they may acquire it accidentally by unequal pressure ... glass , light is polarised when the reflection takes place at an angle of 35 ° 25 ' with the glass . The following ...
... glass , do not possess the property of double refraction , but they may acquire it accidentally by unequal pressure ... glass , light is polarised when the reflection takes place at an angle of 35 ° 25 ' with the glass . The following ...
Side 412
... glass , 35 ° 25 ′ , for quartz 32 ° 28 ' , for diamond 22 ° , and 33 ° 30 ′ for obsidian , a kind of natural black - glass , which polarises light very well . Sir David Brewster has given the following remarkably simple definition of ...
... glass , 35 ° 25 ′ , for quartz 32 ° 28 ' , for diamond 22 ° , and 33 ° 30 ′ for obsidian , a kind of natural black - glass , which polarises light very well . Sir David Brewster has given the following remarkably simple definition of ...
Side 425
... glass , a thin plate of tur- malin , the double refracting prism , Nichol's prism , and the piles of glasses which we have mentioned before . 1. Black Glass . - It will be seen by the figure which we give below ( fig . 349 ) that in the ...
... glass , a thin plate of tur- malin , the double refracting prism , Nichol's prism , and the piles of glasses which we have mentioned before . 1. Black Glass . - It will be seen by the figure which we give below ( fig . 349 ) that in the ...
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accent action adjective adverbs aorist armature body called CASSELL'S cent cloth co-efficient coal common fraction Completing the square Compound conductor conscience Consonant copper cylinder decimal dió diphthong disc divided electricity electrised English word equal faculty fluid French French language Gerund glass Greek hombre IMPERATIVE MOOD Imperfect Indeterminate Preterite INDICATIVE MOOD INFINITIVE MOOD Latin LESSONS letters Leyden jar libros limestone magnetic magnetised means metallic mind moral muger Multiply nature needle negative noun object paper covers Participle Permian person pile plate plural polarisation poles positive predicate preposition Present Gerund Preterite principle Prob produced pronounced Pronunciation quantity quotient radical ratio Reduce the equation rendered root sentence silent sound Spanish square SUBJUNCTIVE SUBJUNCTIVE MOOD syllable Tenses term thing thou thousandths tienen tion tricity verb virtue vowel wire zinc γυνη δε ει εν εστι εστιν και μη οἱ
Populære avsnitt
Side 684 - No more the woodman's ballad shall prevail ; No more the smith his dusky brow shall clear, Relax his ponderous strength, and lean to hear...
Side 700 - Toll for the brave ! Brave Kempenfelt is gone ; His last sea-fight is fought ; His work of glory done. It was not in the battle ; No tempest gave the shock ; She sprang no fatal leak ; She ran upon no rock.
Side 684 - Yes ! let the rich deride, the proud disdain These simple blessings of the lowly train ; To me more dear, congenial to my heart, One native charm, than all the gloss of art...
Side 405 - This is that which I think great readers are apt to be mistaken in. Those who have read of everything are thought to understand everything too; but it is not always so. Reading furnishes the mind only with materials of knowledge; it is thinking makes what we read ours.
Side 684 - Where once the sign-post caught the passing eye, Low lies that house where nut-brown draughts inspired, Where grey-beard mirth and smiling toil retired, Where village statesmen talk'd with looks profound, And news much older than their ale went round. Imagination fondly stoops to trace The parlour splendours of that festive place...
Side 684 - Ye friends to truth, ye statesmen who survey The rich man's joys increase, the poor's decay, 'Tis yours to judge, how wide the limits stand Between a splendid and a happy land.
Side 699 - Shoots into port at some well-havened isle, Where spices breathe, and brighter seasons smile, There sits quiescent on the floods, that show Her beauteous form reflected clear below, While airs impregnated with incense play Around her, fanning light her streamers gay; — So thou, with sails how swift! hast reached the shore " Where tempests never beat nor billows roar," And thy loved consort on the dangerous tide Of life long since has anchored by thy side.
Side 670 - The style of an author should be the image of his mind, but the choice and command of language is the fruit of exercise. Many experiments were made before I could hit the middle tone between a dull chronicle and a rhetorical declamation : three times did I compose the first chapter, and twice the second and third, before I was EDWAHD GIBBON tolerably satisfied with their effect.
Side 700 - Slaves cannot breathe in England ; if their lungs Receive our air, that moment they are free, They touch our country, and their shackles fall.
Side 700 - No powder'd pert proficient in the art Of sounding an alarm, assaults these doors Till the street rings. No stationary steeds Cough their own knell, while, heedless of the sound, The silent circle fan themselves and quake. But here the needle plies its busy task, The pattern grows, the well-depicted...