St. Nicholas, Volume 49Mary Mapes Dodge Scribner, 1922 - Children's literature |
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Page 93
... light as a wave action as it used to be for the boys and girls of the previous generation . However , it is just as astounding to - day as it ever was to learn that the vibrations must run as high as 450 trillion ( 450,000,000,000,000 ) ...
... light as a wave action as it used to be for the boys and girls of the previous generation . However , it is just as astounding to - day as it ever was to learn that the vibrations must run as high as 450 trillion ( 450,000,000,000,000 ) ...
Page 94
... light . Just as our ears are deaf to vibrations below 32 per second and above 36,000 per second , so our eyes , which are infinitely more sensitive , are blind to vibrations below 450 trillion and above 700 trillion per second . In fact ...
... light . Just as our ears are deaf to vibrations below 32 per second and above 36,000 per second , so our eyes , which are infinitely more sensitive , are blind to vibrations below 450 trillion and above 700 trillion per second . In fact ...
Page 95
... light . Obviously , under such conditions , night raids would be impracti- cable . The problem , then , was to make an artificial eye that would be sensitive to radi- ant heat , and then , no matter how black the night , the enemy could ...
... light . Obviously , under such conditions , night raids would be impracti- cable . The problem , then , was to make an artificial eye that would be sensitive to radi- ant heat , and then , no matter how black the night , the enemy could ...
Page 96
... light . It is believed that in reality this nebula is a great universe composed of many thousands of stars so dis- tant that no telescope can show the indi- vidual members , the impression brought to our eyes being that of their ...
... light . It is believed that in reality this nebula is a great universe composed of many thousands of stars so dis- tant that no telescope can show the indi- vidual members , the impression brought to our eyes being that of their ...
Page 110
... lights , and the gas we have is so slow that it will hardly burn . This was all caused by the storm . To get water to ... light service for two or three days longer . I don't live near the river , or our house would have been damaged ...
... lights , and the gas we have is so slow that it will hardly burn . This was all caused by the storm . To get water to ... light service for two or three days longer . I don't live near the river , or our house would have been damaged ...
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Common terms and phrases
ACROSTIC answered asked Aunt Anna Beatrice began Bell birds blue Borough President brain Brisken Bree Busra cabin called Chelm Christmas CLINTON SCOLLARD constellation Cossack dark Davis Cup dear door eyes face father feet fellows fire football girls Gold Badge Green Goblin guess hand head heard Helen hill Jack Jim Donegan Joe Stevenson Kewpie knew laughed Laurie letter live look M'Guire Margaret Mary miles mind Miss Molière mother mountain Nancy never NICHOLAS LEAGUE night Olaf Paul Popenoe Phi Beta Chi play Polly Professor Ditson Rick seemed Sholes Silver Badge smiled snow stars stood story suddenly sure talk tell things thought tion told took trees turned typewriter voice watch wind wonderful words young