What is a Radiometer and how does it work?
The Radiometer is an invention of the English physicist
Crooks and show vividly the conversion of light
into kinetic energy. The black surface of the solar
wing-wheel (a circle of elements which are sensitive
to light) absorbs much more light energy then the
bright one. Because of the stronger heating of the
air molecules on the black surface, a higher pressure
arises there that leads to a rotary motion of the
solar wings. This rotary motion is the result of
the light incidence (radiometer is standing or hanging
by the window) and as well as possible in the gleam
of a light-bulb inside a room (except for cold neon
light). The more intensive the light is the faster
the solar wheel moves. The rotary force on the solar
wing-wheel must be higher than the resistance of
the air molecules; a partial vacuum is generated
in the ball. This demonstration model of a physical
process show how light is transformed into kinetic
energy; therefore the radiometer may be called a
small solar power station.
Does the Radiometer go indoors or outdoors?
It is made for indoors. A Radiometer is a beautiful
window decoration, which would enhance any room
in your house.
How do I hang them?
All of our glass can be hung with either fishing
line, black sturdy string or even a type of hanging
plant chain. This excludes our tealight candle bulbs,
for this item, please use a non-melting, non-flammable
material i.e. metal wire or metal hook.
Does the Radiometer work with any light?
No, it does not work with florescent light.
How do I clean your glass?
You would clean all glass with warm soapy water,
except for any bulbs that are hand painted. Hand
painted glass should be gently wiped off with a
dry cotton cloth. No dishwashers please.
Can your glass be shipped safely?
Absolutely. For further information, please see
our shipping instructions page.
