How do you use a protractor astrolabe?

How to Make the Astrolabe:

1. Tie one end of the string to the hole in the middle flat-edged side of the protractor. If there is not a hole carefully drill one.
2. Attach the metal weight to the other end of the string.
3. Tape the straw to the flat edge of the protractor.

How is an astrolabe like a protractor?

How is an astrolabe like a protractor? Look at the top half of the astrolabe plate. The graduated lines are the same as a protractor. This is done for a very logical reason: they both measure angles.

What is the purpose of an astrolabe?

astrolabe, any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric astrolabe, enabled astronomers to calculate the position of the Sun and prominent stars with respect to both the horizon and the meridian.

How do you make a homemade astrolabe?

Step 1: Cut out the astrolabe template on the black lines. Step 2: Cut a length of string, about 25 cm (10 inches) long. Tie a paperclip to one end of the string. Step 3: Poke a hole in the corner of the astrolabe, using scissors or a hole punch.

What do you need to make an astrolabe?

Use an astrolabe, an instrument to determine the altitude of objects above the horizon, to find your latitude. You can make your own simple astrolabe using a protractor, plastic straw, 12-inch piece of string, and a metal weight (a small bolt or a washer works well).

What was the straw used for in an astrolabe?

Ancient astronomers using astrolabes developed terminology, measurements and techniques which became the foundation of later astronomical knowledge. Measure the straw to be used as the sight vane. Straw will be taped to the straight edge of the protractor using clear tape.

How do you use an astrolabe for latitude?

How To Make an Astrolabe. You can also use the North Star to determine latitude in the Northern Hemisphere. Use an astrolabe, an instrument to determine the altitude of objects above the horizon, to find your latitude. You can make your own simple astrolabe using a protractor, plastic straw, 12-inch piece of string,…

How to make simple astrolabe ” clinometer “?

A clinometer based upon same principles as the protractor device (Public Domain) With a few simple items, you can build your own simple astrolabe and start to chart the motion of the stars. This particular version is usually referred to as a clinometer or inclinometer, and can also be used to measure height using trigonometry.