Word: air
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Dates: during 1890-1899
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...accounts of experiments mention is made of Crooke's tube. As the lecturer showed, it is nothing more than a large receiver of air from which the air can be exhausted. In order to get the rays, however, you must push the exhaustion only to a certain point. Now instead of using the 10,000 cells already mentioned to produce the pale blue flame, a Ruhmkoff coil is introduced, which makes it possible to get a high electro-motive force...
...some time past the question of a quadrangular freshman crew race has been in the air. In the daily papers of several of the colleges long articles have appeared discussing this question of a boat race between the freshman crews of Harvard, Pennsylvania, Cornell, and Columbia, to be rowed in June, about the time of the quadrangular university race...
...through the primary was not stronger than 15 ampheres. The current from the secondary of the first coil was sent through the primary of 25 turns of a Tesla induction coil, the secondary of which has 500 turns. The secondary will give a spark through about six inches of air. Its terminals were connected with the electrofloe of the Crooke's tube already mentioned...
...insects and bats, and tracing the different stages of development from the simplest species of insects, Professor Morgan gave a detailed explanation of a bird's wing. He showed that the wing muscles and the heavy bones are at the bottom of the body and the lungs and air-cells at the top, so that the bird, ballasted as it is, naturally rights itself when in air. The feathers of the wing are divided into primary and secondary feathers. In all swift flying birds the primary or outer feathers of the wing are "feathered" or turned edgewise on the recover...
...objection which many persons have to gymnastics is that they are most always practiced in-doors. Now that the Corporation have provided a place for out-of-door gymnastics, it is hoped that large classes will avail themselves of this opportunity to take exercise in the open air...