What is the angle of a gnomon?

What is the angle of a gnomon?

90°
The gnomon of the vertical sundial makes an angle of 90°–L with the vertical (that is, an angle L with the horizontal), as shown in the side view in Figure 5. In the southern hemisphere, the vertical dial is north-facing. Unlike the equatorial dial, the hour angles are not equally spaced.

How do you make a paper plate sundial?

1Cut out the sundial and glue it to a paper plate. 2Poke a hole through the center of the plate using the pencil. 3Push the straw through the hole, and tape the short end underneath to hold it in place. 4Take your sundial outside on a sunny day at noon and place it in a flat, sunny area.

Where does the gnomon point?

The pointy bit of a sundial is called a ‘gnomon’. It is the part that casts the shadow and in the northern hemisphere it points south.

How do you make a sundial out of wood?

Sundial From Scrap Wood

1. Step 1: Get Wood. Get a sturdy piece of Plywood.
2. Step 2: Cut Out a Circle. Cut a circle out of the wood.
3. Step 3: Glue to Stand. With another piece of wood, cut it at the angle of your latitude.
4. Step 4: Add Gnomon.
5. Step 5: Add Time Lines.
6. Step 6: Stain.
7. Step 7: Paint.
8. Step 8: Place Sundial.

What is a gnomon device?

gnomon, device originally meant as an instrument for calculating the time. In its most simple form it seems to have been a rod placed vertically on a plane surface, later upon the surface of a hemisphere. From this early use it came to represent a figure like a carpenter’s square but usually with equal arms.

What is a gnomon made of?

To make a gnomon, you will need a straight piece of wood for the base (I used a redwood 1 x 3 by 22 in. long), a length of metal rod (mine was 1/8 in. diameter brass rod about 10 in. long), a piece of millimeter paper, a small spirit level, and some household cement.