Solar clock do it yourself. How to make a sundial with your own hands

When traveling, it is sometimes necessary to navigate the sun, for which you need to know the approximate time. If there are no watches with a dial, you can make a sundial with your own hands. In addition to practical importance, this design will be an excellent decoration of the garden plot. In addition, making the solar time finder will be an exciting activity for children to follow the movement of the sun and find out the time of day. How to make a sundial? Read more about this below.

  • Types of sundials
  • 2How to make a sundial with your own hands: video
    • 2.1Equatorial sundial: production
    • 2.2 How to make a horizontal sundial
    • 2.3Production of vertical sundial

Types of sundials

Sundial manufacture
Solar timers are divided into three types: vertical, horizontal, equatorial. The first type is mounted on the walls of buildings, respectively, has a vertical dial, directed strictly to the south. The rod for indicating the time is located above the center of the dial with a deviation of an angle equal to 90 degrees minus the latitude of an individual locality.

 

The second type is located on the ground in a horizontal position. The hour bar has the form of a triangle with an angle equal to the latitude of the terrain, called the gnomon. He points north. These clocks show the exact time all year round, except for winter and late autumn. The surface of the equatorial clock is tilted relative to ground level and rotated to the north. Gnomon is a rod perpendicular to the dial, located parallel to the earth’s axis. On  The dial is marked with divisions in the same way as usual watch hands, every 15 degrees. The disadvantage of the equatorial clock is that they will show information only in the period between the days of the spring and autumn equinox in the northern hemisphere, and vice versa – in the southern hemisphere. The advantage of this type of watch is their mobility. You can make a small structure that can be moved to the right place.

How to make a sundial with your own hands: video

The most common horizontal and equatorial sundials, but despite this it is worth describing the manufacture of each of the three types. Before manufacturing the structure, it is necessary to determine the place for its placement This should be a territory not blocked by buildings, trees and other objects. It is better to pre-monitor the location of future hours throughout the year, so that it is constantly sunny. Depending on the location, it will depend on what type of clock to make. – vertical, horizontal or equatorial. If a lot of shadows from pillars, fences fall on the plot, the best option would be to make vertical sundials that can be attached to the wall of the house or on a decorative column.

DIY clock
Solar timers are divided into three types: vertical, horizontal, equatorial. The first type is mounted on the walls of buildings, respectively, has a vertical dial, directed strictly to the south. The rod for indicating the time is located above the center of the dial with a deviation of an angle equal to 90 degrees minus the latitude of an individual locality.

 

The second type is located on the ground in a horizontal position. The hour bar has the form of a triangle with an angle equal to the latitude of the terrain, called the gnomon. He points north. These clocks show the exact time all year round, except for winter and late autumn. The surface of the equatorial clock is tilted relative to ground level and rotated to the north. Gnomon is a rod perpendicular to the dial, located parallel to the earth’s axis. On  The dial is marked with divisions in the same way as usual watch hands, every 15 degrees. The disadvantage of the equatorial clock is that they will show information only in the period between the days of the spring and autumn equinox in the northern hemisphere, and vice versa – in the southern hemisphere. The advantage of this type of watch is their mobility. You can make a small structure that can be moved to the right place.

How to make a sundial with your own hands: video

The most common horizontal and equatorial sundials, but despite this it is worth describing the manufacture of each of the three types. Before manufacturing the structure, it is necessary to determine the place for its placement This should be a territory not blocked by buildings, trees and other objects. It is better to pre-monitor the location of future hours throughout the year, so that it is constantly sunny. Depending on the location, it will depend on what type of clock to make. – vertical, horizontal or equatorial. If a lot of shadows from pillars, fences fall on the plot, the best option would be to make vertical sundials that can be attached to the wall of the house or on a decorative column.

DIY clock

Equatorial sundial: manufacturing

The basis is to take a plywood or a piece of plastic, on which divisions are applied every 15 degrees. A metal rod or pin of any other strong material is fixed in the center of the base. Its length varies depending on the size of the watch.

In order to give the correct tilt of the dial, it is installed on a special stand. To correctly calculate the angle of inclination, it is necessary to subtract from 90 degrees the degree value of the latitude of the area where the sundial is installed.

After the dial is installed, they need to be oriented so that the gnomon points north. This should be done as follows: some time before noon, the rod (the gnomon) is fixed on a horizontal plane. The place where the shade of the rod will fall should be noted with a dot, then draw a circle with a compass. The center of this circle will be where the gnomon is fixed. The length of the shadow at the time of observation will denote the radius of the circle. Next you need to observe the movement of the shadow. Departing from the drawn circle, it will gradually decrease, then grow again, crossing the circle again. In the place where she crosses it a second time, you need to put a mark and connect it with the first mark. The segment, which as a result will be obtained, must be divided in half. The straight line that passes through the middle of the resulting segment and the center of the circle will indicate the north-south direction. Next, you need to designate the dial, for which the base is marked on 24 equal segments of 15 degrees each, put numeric markup.

For the correct orientation of the equatorial homemade watches, you must comply with the conditions:

  • The part of the dial, which shows the numbers from 6 to 18, must be strictly horizontal.
  • Part of the dial with the numbers 12-24 should coincide with a specific direction north-south.
  • The dial should be tilted so that the angle is the value of local latitude.

How to make a horizontal sundial

The sundial with their hands with a horizontal dial are made even easier than the equatorial.

The base is made of solid material, you can take plywood or plastic. It can be made round or square. Gnomon is made of the same material in the form of a triangle, one angle of which should be 90 degrees, and the second – latitude of a single locality. The triangular arrow is attached to the base, and installed on the ground in the right place. In order to turn the arrow to the north, they are guided by a compass. To indicate divisions on the dial, you must start a timer, and each hour mark the shadow of the arrow.

 

Making a vertical sundial

How to make a sundial
Vertical sundials are best placed on the south side. Making this type of sundial is more complicated than the first two. The dial is located parallel to the horizon in a strict southern direction.  for the northern hemisphere. Just above the central part of the base of the time determinant it is necessary to mark the location of the arrow, and from this point pull the plumb line, on which you need to draw a line. This line will mark the time of noon. Numeric designations are located on the dial symmetrically only if the rod is in a strictly perpendicular position relative to the dial. Fixing the rod in the wall is not so easy: first you need to drill a hole larger than the gnomon with a diameter. The part of the rod that will be fixed inside the wall needs to be flattened out a bit in order to prevent it from turning. The place of attachment is moistened, the core is inserted there so that the place of the bend is exactly in the wall. The rod must be rotated so that it makes an angle of 90 degrees with the surface of the wall before the solution at the point of attachment hardens.

 

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