Science, Volumen51John Michels (Journalist) American Association for the Advancement of Science, 1920 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Página 222
... projectiles seeking out those guns and of the re - directing of our guns until those of the enemy had been destroyed ... projectile and the energy required to carry it to a certain place and to cause it there to explode at a chosen time ...
... projectiles seeking out those guns and of the re - directing of our guns until those of the enemy had been destroyed ... projectile and the energy required to carry it to a certain place and to cause it there to explode at a chosen time ...
Página 223
... projectile to continue in motion . It is assumed to be con- stant for any definite projectile . But it was found that when the angle of elevation was changed , or even the muzzle velocity , in gen- eral C had to be changed to allow for ...
... projectile to continue in motion . It is assumed to be con- stant for any definite projectile . But it was found that when the angle of elevation was changed , or even the muzzle velocity , in gen- eral C had to be changed to allow for ...
Página 225
... projectile is a sphere or that the retardation is independent of the angle which the projectile presents to the air , or else that the projectile always turns nose on to meet the air . We know , however , definitely that an air stream ...
... projectile is a sphere or that the retardation is independent of the angle which the projectile presents to the air , or else that the projectile always turns nose on to meet the air . We know , however , definitely that an air stream ...
Página 226
... projectiles that we know of , seem to confirm it . These motions of precession and nutation of a projectile can be studied by firing through a number of cardboard screens spaced at equal distances along the line of fire . As has been ...
... projectiles that we know of , seem to confirm it . These motions of precession and nutation of a projectile can be studied by firing through a number of cardboard screens spaced at equal distances along the line of fire . As has been ...
Página 227
... projectiles , and it was evident by the hole formed in the cardboard screen through which the projectile had passed , that these lips were TRACK & PROJECTILE WITH UNMODIFIED BAND MARK 12 PROJECTILE HOOK12 MARCH 5 , 1920 ] 227 SCIENCE.
... projectiles , and it was evident by the hole formed in the cardboard screen through which the projectile had passed , that these lips were TRACK & PROJECTILE WITH UNMODIFIED BAND MARK 12 PROJECTILE HOOK12 MARCH 5 , 1920 ] 227 SCIENCE.
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Página 239 - THE Bruce Gold Medal of the Astronomical Society of the Pacific has been awarded to Professor Ernest W. Brown, of Yale University, for " distinguished services to astronomy.
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Página 553 - Papers from the Department of Biometry and Vital Statistics, School of Hygiene and Public Health, Johns Hopkins University, No.