ScienceJohn Michels (Journalist) 1952 |
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Стр. 94
... light ; B , response to blue light ; C , solid curve , response to successive stimulation of yellow and white light ; D , solid curve , response to successive stimulation of blue and white light ; E , solid curve , response to ...
... light ; B , response to blue light ; C , solid curve , response to successive stimulation of yellow and white light ; D , solid curve , response to successive stimulation of blue and white light ; E , solid curve , response to ...
Стр. 172
... lights . These relative intensities were 1 , 1/10 , 1/100 , and 1/1000 . The intensity of the light was altered through the use of sector disks rotated by an electric motor . The speed of rotation was well above the flicker fusion ...
... lights . These relative intensities were 1 , 1/10 , 1/100 , and 1/1000 . The intensity of the light was altered through the use of sector disks rotated by an electric motor . The speed of rotation was well above the flicker fusion ...
Стр. 281
John Michels (Journalist). Through the manipulation of daily light duration a photoperiodic control of sexual activity has been found in birds ( 5 ) . Although much has been said of light as a stimulus , little or no importance has been ...
John Michels (Journalist). Through the manipulation of daily light duration a photoperiodic control of sexual activity has been found in birds ( 5 ) . Although much has been said of light as a stimulus , little or no importance has been ...
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