The time needed for a sundial to move ten degrees depends on the specific location and time of year due to the changing position of the sun in the sky. Generally, it can take about 40-60 minutes for a sundial to move ten degrees.
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Oh, dude, the wheelbarrow definitely came first! Like, imagine ancient humans trying to move heavy stuff around without a wheelbarrow - that would've been a total workout. The sundial came later, probably when someone was like, "Hey, let's figure out what time it is while we're hauling stuff in our wheelbarrows."
The sun appears to rise in the East, move across the sky during the day and set in the West. A sundial has a pointy part which is called a gnomon. In the morning the shadow of its tip is in the West. During the day this shadow moves across the face of the sundial, and end up in the East. The gnomon is angled to take account of the latitude of the location and the sundial is graduated with marks which indicate the hours at which the shadow will fall at a particular place on the sundial.
The sun appears to move 15 degrees in a one hour. However, it is really the Earth that rotates 15 degrees an hour, relative to the sun.15 degrees. (This is APPARENT motion only. The Earth is revolving. The Earth takes 24 hours to revolve 360 degrees.) 360 degrees/24 hours x 1 hour = 15 degrees
The stars appear to move 360 degrees in 24 hours due to the Earth's rotation on its axis. As the Earth spins, it creates the illusion that the stars are moving across the sky. This motion is what gives us day and night cycles.
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clockwise
Energy
The sundial itself doesn't really change day to day, or even year to year. They are generally fixed to the Earth and are not, in general, portable. The shadow cast by the "gnomon" (the pointer of the sundial) does move moment by moment throughout the day, and slightly from day to day.
Look at the shadows cast by sunlight instead. For example, use a sundial.
In a car, a transmission system is needed because the engine does not make enough torque to make the car move.
Oh, dude, the wheelbarrow definitely came first! Like, imagine ancient humans trying to move heavy stuff around without a wheelbarrow - that would've been a total workout. The sundial came later, probably when someone was like, "Hey, let's figure out what time it is while we're hauling stuff in our wheelbarrows."
The sun appears to rise in the East, move across the sky during the day and set in the West. A sundial has a pointy part which is called a gnomon. In the morning the shadow of its tip is in the West. During the day this shadow moves across the face of the sundial, and end up in the East. The gnomon is angled to take account of the latitude of the location and the sundial is graduated with marks which indicate the hours at which the shadow will fall at a particular place on the sundial.
force
force
Clocks developed in the Northern Hemisphere and most were designed to follow the same (clockwise) motion as appears on the earlier invention, the sundial. In the Northern Hemisphere, a horizontal sundial facing south will display the passage of time as motion west to east, as the Sun appears to move east to west.
For 45 degrees, move along 100 mm and up 100 mm. For 30 degrees, move along 100 mm and up 58 mm. For 60 degrees move along 100 mm and up 188 mm.