Before the most modern pocket watches appeared, it was quite a challenge. Even Galileo was part of the pendulum invention and so on. Imagine that you ...
Before the most modern pocket watches appeared, it was quite a challenge. Even Galileo was part of the pendulum invention and so on. Imagine that you are in the field and you forgot to take your watch, and you need to manage your time, but you have a rope and tie a stone in one end, now your challenge is to determine what length the rope must have to swing and do so once per second.
Rules of the Game
When creating your own pocket watches, you can change the length of the rope to drag after clicking on the free end. This increases and decreases the length of the rope. You can even try online on a few platforms to see what happens to the time it takes to swing. The same applied to sundials that are formed by a stylus, whose shadow is projected on a plane or quadrant in which the lines are drawn slots which allow us to determine the time.
For the orientation of the quadrant can distinguish different types of sundials:
Ø Equatorial dial: if a plane parallel to cut off our planet by Ecuador.
Ø Horizontal dial: if it is horizontal.
Ø Oriented vertical dial: it is vertical and facing the South.
Ø Vertical declining dial: it is vertical, but is not oriented exactly toward the south. The sundial is typical of the facade of a house.
Some pocket watches can be easily built from cardboard or plywood. It consists of two parts: one is rectangular and a triangular quadrant that will support everything. Each has a slot that allows us to fit them.
The overall construction is very simple. You need to focus. It will begin cutting the quadrant, which is a rectangle twice as long as wide. Its dimensions may be as we want, but it is recommended that its length is 15 to 30 inches. At half the length must be a slot that reaches half the width, with the same width as the thickness of the material used to build. The time lines should be drawn at intervals of 15 ° on both sides of the dial, that is, the face of spring-summer and autumn-winter.
Just as with any other model, the basic foundation of pocket watches is in the rotational motion of our planet, which, though not with absolute accuracy, makes a complete circle in 24 hours. That is, it takes 24 hours to rotate 360 degrees.
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