Spark Discharge (NBO)

Spark Discharge (NBO)The Spark Discharge Apparatus is an extremely visual and audible demonstration of the ionization of air caused by Alpha particles. As an Alpha source is moved along the brass mesh, Alpha particles ionize the air, causing a conductive path to form from the mesh to the conductor below, causing a shower of bright sparks and a crackling sound. Moving the source along the track clearly demonstrates that the sparks follow the source. Requires an alpha

Factory calibrated Hall-effect probe

The single cuvette holder takes 10mm path length cuvettes

BEK NTC Thermistor mounted on a yellow baseplate with sockets to accommodate the connection of 4mm plug leads

Dolls and furniture sold separately

The brightly coloured Measure-Mate™ is perfect for non-standard measuring or the introduction of standard units

• 5 x hand magnifiers

Ideal for pupils to explain and show

Compare the image in the reflection when the water is still and when its slightly moving

Includes Getting Started guide with 4 activities

in pairs or in teams

1 phosphorous (5 hole)

Promotes Imaginative Play