(Gravesande

For linear heat expansion demonstrations.

Brass and iron strips 200mm long, riveted together with wooden handle for the demonstration of unequal expansion of different metals over the same heat range.

metal strips of brass/copper/iron/aluminium screwed to a ring. The outer ends of the strips are formed into small cups. The cups hold a small piece of paraffin or other low melting point substance while the ring centre is held over a bunsen burner. The conductivity (or rate of heat transfer) of the different metals can be compared by the different melting rates of the samples.

Consisting of five rods (aluminium, brass, copper, iron, steel) each 300 x 6mm in size for a variety of conductivity of heat experiments.

3 cylinders 20mm diameter, 30mm long of iron, copper and aluminium for specific heat experiments. Supplied in a plastic storage case.

50mm diameter x 75mm high, suitable for a variety of specific heat experiments.

50mm diameter x 75mm high, suitable for a variety of specific heat experiments.

Aluminium outer vessel 100mm x 100mm with inner vessel 60 x 70mm fitted with lid, heating coil and stirrer. Operated by DC power to 6V.

Vanes are silver one side and black on the other. Vanes rotate when placed in sunlight demonstrating energy of radiation.

set of five ( aluminium/brass/copper/iron/lead/zinc) 1cm sides.

Wooden, for lenses and mirrors up to 80mm diameter.

Lines provide a mini prismatic effect in breaking up white light into its component colours.

For the measurement of the wavelength of light. Supplied with glass plate, lens and adjusting screws.

Faces optically polished.

75 x 50 x 18mm, sides optically polished.

Bi-concave, focal length

Bi-concave, focal length

Bi-concave, focal length

Bi-convex, focal length