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
OUT OF STOCK - £46.00
essential for finishing off a space outfit. light and comfortable and fits neatly on the shoulder with padded supports. power button to retract visor and button to activate mission control...
authentic spacesuit with nasa cap and plenty of important-looking stitched on badges, zips, pockets and straps. fortrips into outer space.helmet and boots sold separately.100% polyester also available in orange
OUT OF STOCK - £13.00
black children's space gloves with nasa emblem and reflective patches. finishes off our astronaut's costume well, and warm and practical enough to be worn outside as winter gloves too. lined,...
space boots that fit neatly over children's shoes. drawstring leg and easy-to-close adjustable straps. completes the space outfit and leaves the astronaut ready to zoom to the moon. approx age 6-8