OUT OF STOCK - £20.00
completely mesmerising, watch the wings spin when
placed in the light or sun. also known as a light mill
or solar engine, the solar radiometer was invented in
1873 by an english physicist. it demonstrates, with simple
physics and movement, how light can be transformed
into energy. when exposed to a warm light source, such
as the sun or a lamp, the black and polished vanes spin.
the black side of the vane absorbs the light faster than
the polished side, air pressure builds and raises the
temperature of the air molecules on the back side
of the vane causing the spinning motion.
the black used on the vanes can sometimes flake off.
these flakes are usually very small. this is not a defect,
but a result of the hand made nature of the product.
made in glass, beechwood and steel.
instructions in six languages
product 10 x 8 cm
box 16 x 12 cm
this is not a toy
this cyanotype kit contains all the tools and materials needed to create impressive photographic art, using only sun and water. just add leaves, flowers or any other object to create...
OUT OF STOCK - £15.00
6 light sensitive watercolour paper sheets for solar powered photography. place any object on the sunography paper, expose it to bright sunlight, and rinse to reveal a rich blue print....
6 light sensitive squares of cotton fabric sheets for solar powered photography. place any object on the sunography fabric, expose it to bright sunlight, and rinse to reveal a rich...
quirky paper napkins to liven up the dinner table. fun for picnics too.four different designs for tuckinginto your neckline. 20 napkins 33cm square designed in the usa made in china