Description

• The fins are polished or white on one side and black on the other. When exposed to sunlight, artificial light or infrared radiation (even the heat from a nearby hand can be enough), the fins rotate without apparent driving force, the dark sides remove from the source of radiation and the sides of the light moving forward.
• Simply place it near a window or under direct incandescent light, the car blades only rotate under the effect of light (sunlight or incandescent). The light shines on the globe, the dawn turns quickly.
• Subject: Physical; Inside the bulb, on a low coefficient of friction, finds a rotor with several (usually four) vertical light metal fins spaced equally around the axis.
• The beautiful glass radiometer makes a great gift for anyone who has everything.
• All made of glass. This physical and technical miracle clearly shows you how sunlight is converted into energy. Place near a window or under incandescent light and observe the rotation of the flights.

Bairong Size: 120mm, dial diameter 75mm, base diameter 62mm
Material: Glass
Color: Transparent

Package contents:
1 x Radiometer
Height: 205mm
Ball diameter: 90mm
Base diameter: 80mm
The whole is made of glass and the interior is close to vacuum. It can be rotated by light, and it can be rotated in the opposite direction by cold wind
Principle: When the light is illuminated, the black leaf surface absorbs heat energy, and the white leaf surface releases heat energy, which can push the four leaf surfaces to rotate.

Only the above package content, other products are not included.
: light reflection and different screen can make the color element of the picture a different from the real object. The allowed measurement is +/- 1-3 cm.