The Problem of Human Life: Embracing the "evolution of Sound" and "evolution Evolved," with a Review of the Six Great Modern Scientists, Darwin, Huxley, Tyndall, Haeckel, Helmholtz, and MayerHall, 1880 - 512페이지 |
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85개의 결과 중 1 - 5개
77 페이지
... oscillations of the instrument be slow , thereby causing a low pitch , then the syn- chronous discharges of the ... oscillate synchronously to such waves . Hence , that , these air - waves , moulded and sent off by the vibrating string ...
... oscillations of the instrument be slow , thereby causing a low pitch , then the syn- chronous discharges of the ... oscillate synchronously to such waves . Hence , that , these air - waves , moulded and sent off by the vibrating string ...
79 페이지
... oscillation , very feebly at first , but each succeeding air - wave dash- ing against it in perfect periodicity to its own vibrations , gives it a new impetus at every blow , till finally this sympathetic motion is brought to its ...
... oscillation , very feebly at first , but each succeeding air - wave dash- ing against it in perfect periodicity to its own vibrations , gives it a new impetus at every blow , till finally this sympathetic motion is brought to its ...
81 페이지
... oscillate ever so nearly to another body tuned in perfect synchronism with its own swing , and ever so rapidly , but ... oscillations , which are exactly the same whether such string is connected with the sounding - board or not . If the ...
... oscillate ever so nearly to another body tuned in perfect synchronism with its own swing , and ever so rapidly , but ... oscillations , which are exactly the same whether such string is connected with the sounding - board or not . If the ...
84 페이지
... oscillation into an abnormal and ob- noxious swing which causes a hundred - fold the amount of tone , while the string itself , not a thousandth part as large in area , re- tains its perfect pitch , mastering and anni- hilating that of ...
... oscillation into an abnormal and ob- noxious swing which causes a hundred - fold the amount of tone , while the string itself , not a thousandth part as large in area , re- tains its perfect pitch , mastering and anni- hilating that of ...
85 페이지
... oscillating with a different amplitude of swing at the same instant of time , and all save one forced or coerced away from the normal oscillation of the board , since the distinct note of any one set of strings can be sorted out from ...
... oscillating with a different amplitude of swing at the same instant of time , and all save one forced or coerced away from the normal oscillation of the board , since the distinct note of any one set of strings can be sorted out from ...
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absolutely absurdity admit air-particles air-waves amplitude animals argument atmosphere atoms cause compressed condensations and rarefactions constituting corporeal corpuscles Darwin demonstrated distance drum-skin embryo entirely evidence evolution evolutionists exactly existence explain fact feet a second force fork gemmules Haeckel heat Hence Huxley hypothesis inches intelligent intelligent design iron Joseph Cook logical marsupial mechanical ment mind monera moneron natural selection necessarily organism Origin of Species orohippus oscillation over-tones ovule pangenesis pantheism particles phenomena philosophical physical physicists pitch principle produced Prof Professor Helmholtz Professor Tyndall prong prove pulses rarefactions reader reason result scientific single siren sonorous soul sound-pulse sound-waves species spontaneous stridulation string structure substance substantial supposed sympathetic vibration teaches theory of descent thing tion tone transmutation true truth tube tuning-fork tympanic membrane undulatory unison velocity of sound vibrational number vital and mental water-waves wave-length wave-motion wave-theory of sound waves
인기 인용구
396 페이지 - What limit can be put to this power, acting during long ages and rigidly scrutinising the whole constitution, structure, and habits of each creature, — favouring the good and rejecting the bad?
29 페이지 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity that I believe no man who has in philosophical matters a competent faculty of thinking can ever fall into it.
452 페이지 - If such do occur, can we doubt (remembering that many more individuals are born than can possibly survive) that individuals having any advantage, however slight, over others, would have the best chance of surviving and of procreating their kind?
452 페이지 - Several writers have misapprehended or objected to the term Natural Selection. Some have even imagined that natural selection induces variability, whereas it implies only the preservation of such variations as arise and are beneficial to the being under its conditions of life.
396 페이지 - Not one man in a thousand has accuracy of eye and judgment sufficient to become an eminent breeder. If gifted with these qualities, and he studies his subject for years, and devotes his lifetime to it with indomitable perseverance, he will succeed, and may make great improvements; if he wants any of these qualities, he will assuredly fail.
263 페이지 - In the earlier ages of the church it held that the earth was the center of the universe, and that the sun. moon, and stars revolved around it.
445 페이지 - And as Natural Selection works solely by and for the good of each being, all corporeal and mental endowments will tend to progress towards perfection.
396 페이지 - Let this process go on for millions of years; and during each year on millions of individuals of many kinds; and may we not believe that a living optical instrument might thus be formed as superior to one of glass, as the works of the Creator are to those of man ? Modes of Transition.
100 페이지 - Imagine one of the prongs of the vibrating fork swiftly advancing. It compresses the air immediately in front of it, and when it retreats it leaves a partial vacuum behind, the process being repeated at every subsequent advance and retreat.
370 페이지 - Ontogeny is a recapitulation of Phylogeny ; or, somewhat more explicitly : that the series of forms through which the individual organism passes during its progress from the egg cell to its fully developed state, is a brief, compressed reproduction of the long series of forms through which the animal ancestors of that organism (or the ancestral forms of its species) have passed from the earliest periods of so-called organic creation down to the present time.