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Updated: May 15, 2025
He also discovered the valuable mechanical principle that if any number of bodies be connected so that by their motion there is neither ascent nor descent of their centre of gravity, these bodies are in equilibrium. Besides making these discoveries, he greatly improved the microscope and the telescope, and invented a simple microscope made of a globule of glass.
The Senator crossed his legs and hung his hat on one knee. "As I make it out, here's our situation! I ask MacDonald here, who is the richest sheepman west of the Mississippi, what's he willing to do for the party. Far as I can see without a telescope or microscope, he doesn't raise a finger won't even take out papers so he can vote!
In other chapters, particularly the one dealing with the house-fly and typhoid, we shall see how it is that insects are often important factors in spreading some of the most dreaded of the bacterial diseases. The Protozoa, or one-celled animals, belonged to an unknown world before the invention of the microscope.
"You will see," he explained, "on the edge of this photograph a rough sketch calling attention to a mark like an L which is the chief characteristic of this hammer, although there are other detailed markings which show well under the microscope but not in a photograph.
We used to be seated, my Father at his microscope, I with my map or book, in the down- stairs room we called the study. There would be a hush around us in which you could hear a sea-anemone sigh.
At the end of each of the small divisions of the compound leaflet there is, when the leaf first unfolds, a little yellow fruit-like body united by a point at its base to the end of the pinnule. Examined through a microscope, this little appendage looks like a golden pear.
I had no time to attend to it, and the days passed; besides, the excitement of my examinations was enough to make my hair fall. To- day, just before you came, I had a few minutes to spare, and I examined one of my hairs through a microscope; if I had not been disturbed I should have finished by this time." "Continue your examination." "It would take some time to do it thoroughly.
It was a Zeelander, too; who placed the instrument in the hand of Galileo by which that daring genius traced the movements of the universe, and who, by another wondrous invention, enabled future discoverers to study the infinite life which lies all around us, hidden not by its remoteness but it's minuteness. Zacharias Jansens of Middelburg, in 1590, invented both the telescope and the microscope.
Show me what I can see with my microscope, cut with my scalpel, weigh in my balance, and I will devote a lifetime to its investigation. But when you ask me to study feelings, impressions, suggestions, you ask me to do what is distasteful and even demoralizing. A departure from pure reason affects me like an evil smell or a musical discord.
Until very near taps the boys talked of the mystery of the ring, and that night both of them dreamed over and over of the ring and the sinister man in black. The following day Frank obtained permission to look at the ring through the powerful microscope belonging to the academy. Bart accompanied him to the experimenting room, and they were soon taking turns in looking at the marked stone.
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