FI79626C - MINIPLANETARIE. - Google Patents

Description

1 79626

Miniplanetarium - Miniplanetarie

The invention relates to a mini-planetarium which illustrates the variations in which the earth's diurnal rotation and displacement in its annual cycle orbit causes the earth from the sun and the resulting changes to a fixed starry sky. which is rotated by a clock device, and which axis of the anti-reflector plate forms an angle of 23.5 ° with the axis of rotation of the earth.

The mini-planetarium described above is known, for example, from U.S. Patent 3,197,893 and GB Patent 1,106,553. However, the interdependence of diurnal and seasonal variations is not shown in these known devices.

The object of the invention is to provide a device with which the interdependence of diurnal and seasonal variations can be illustrated at any given time on Earth. It is a kind of world clock that not only allows you to illustrate diurnal variations anywhere on the planet at any given moment, but also a device to pay attention to how seasons affect diurnal variations.

The invention is characterized in that the clock device rotates the anti-reflection plate, in a position perpendicular to the annual orbit of the earth, the rotation ratio of the anti-reflection plate and the earth being 1: 365, thus obtaining night and day turns of the earth in different seasons with respect to the starry sky.

In a preferred embodiment of the invention, the anti-reflection plate is provided with solar projection spot light spaced at a distance of 2,79626 from the anti-reflection plate on its reflecting side and in a median plane perpendicular to its axis of rotation.

The invention will now be described in detail with reference to the drawings, in which Figure 1 shows a mini-planetarium with a globe (1) and a starry sky (2), Figure 2 shows the globe (1) of Figure 1, which is broken, Figure 3 shows a fragment of Figure 2. surgery AA.

The starry sky (2) in Figure 1 is a transparent sphere, the central part of which forms the celestial equator (4), which is in the same plane as the earth's equator (3), the stars are attached to their coordination points and thus the main constellations are formed.

The globe (globe) of Figure 2 (1) is translucent, rotates counterclockwise at an angle of inclination of 23.5 ° 365 revolutions per year or for educational purposes 1-2 revolutions per minute.

The anti-reflector plate (5) of Figure 2 divides the day and night on the earth, the plate rotates counterclockwise on the central axis of the globe in an upright position once a year and is thus in a 365: 1 gear ratio to the earth (11). Commissioning and synchronization with the current season and time of day can be accomplished by moving the drive shaft coupling sleeve (7) to neutral and then manually rotating the earth to 3 79626 spring equinox, which can be found in the position with the sun's projection spotlight (6) . From this, the ball is further rotated forwards and backwards as many turns as there are days to the desired date, during the day the ball is moved following the solar projection spotlight, the switch is moved and the electricity is connected to the clock mechanism (8). The ball light (9) must be switched on throughout the synchronization. The device will then remain in sync with the clockwork in use.

The solar projection point light (6) of Figure 2 is attached to a reflector-blocking plate which rotates counterclockwise once a year. If we are at a standstill on a winter day, then the projection point light is in Kauri's turning circle. When the globe (globe) has rotated about 91 rotations from this, the reflector block plate has turned counterclockwise for 1/4 of its rotation and thus the projection point light is in the equator (3) in the spring day equalization. In this way, the quarters are repeated, and during each day the sun rises, the midday at our place and the sunset, so following the projection point light, we see the seasons and times of day from the earth (globe).

The sunlight (9) in Figure 2 is a fixed lamp (approx. 5 W and 12 V (protective voltage)). In addition, Fig. 2 shows a sliding contact (12) of the solar projection point light (6), a fixed body (10) of the device, a 365: 1 transmission device (11) and a drive shaft and a clutch sleeve (7) connected to a normal time clock or a high-speed teaching , 1-2 rpm rotating drive.

Claims (2)

4,79626 1. A mini-planetarium illustrating the variations in which the earth's diurnal rotation and displacement in its annual orbit causes the earth from the sun and the resulting changes to the fixed starry sky, which consists of a substantially transparent celestial sphere (2) 9) and a globe (1) with a reflector-blocking plate (5), which is rotated by a clock device (8) and which axis of the reflector-blocking plate forms an angle of 23.5 ° with the axis of rotation of the earth, characterized in that the clock device (8) rotates the reflector-blocker plate (5), in a position perpendicular to the earth's annual orbit with a rotation ratio of the reflector-blocking plate (5) and the earth (1) of 1: 365, giving the night and day turns of the earth in different seasons with respect to the starry sky. Mini-planetarium according to claim 1, characterized in that the anti-reflector plate (5) is provided with a solar projection spotlight (6) spaced from the anti-reflector plate (5) on its reflection side and in a median plane perpendicular to its axis of rotation. every moment the point on the globe (on the globe) where the projection point actually is at any given time.