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Pagina 28
method to measure these two arcs separately ; that is to say , the zenith distance of the sun is considered as the immediate object of investigation , and the remaining arc , or as it is usually termed , the co - latitude of the place ...
method to measure these two arcs separately ; that is to say , the zenith distance of the sun is considered as the immediate object of investigation , and the remaining arc , or as it is usually termed , the co - latitude of the place ...
Pagina 31
When these discover that their discernment of distant objects is less quick or less correct than that of others , a though the difference may be very slight , influenced [ 31 ] Observations relative to the near and distant Sight of ...
When these discover that their discernment of distant objects is less quick or less correct than that of others , a though the difference may be very slight , influenced [ 31 ] Observations relative to the near and distant Sight of ...
Pagina 32
... in the space of nearly twenty years : and yet many parts of a soldier's duty require him to have a tolerably correct view of distant objects ; as of the movements of the fugleman in exercise , and of the buil's eye when shooting at ...
... in the space of nearly twenty years : and yet many parts of a soldier's duty require him to have a tolerably correct view of distant objects ; as of the movements of the fugleman in exercise , and of the buil's eye when shooting at ...
Pagina 34
... gradual in its progress , instances occasionally occur of its existence , in a considerable degree , even in children ; in whom it is sometimes discovered almost as soon as they begin to take notice of the objects around them .
... gradual in its progress , instances occasionally occur of its existence , in a considerable degree , even in children ; in whom it is sometimes discovered almost as soon as they begin to take notice of the objects around them .
Pagina 36
It has also been commonly believed , that the size of the pupil is influenced by the distance of the object to which the attention is directed , this aperture being enlarged when the object is far off , and becoming more and more ...
It has also been commonly believed , that the size of the pupil is influenced by the distance of the object to which the attention is directed , this aperture being enlarged when the object is far off , and becoming more and more ...
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Philosophical Transactions of the Royal Society of London Royal Society (Great Britain) Volledige weergave - 1835 |
Philosophical Transactions of the Royal Society of London Royal Society (Great Britain) Volledige weergave - 1836 |
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