Physics

For demonstration of Boyle’s law to group of students. With Glass tube protected by a plastic safety screen, Volume of air is read from a scale visible behind the tube and pressure is measured by a bourdon gauge. Mounted on a plastic base.

Consists an air tight plastic syringe supported between two wood blocks. Placing various weights on the upper block compresses the gas, allowing pressure and volume measurements to be made to verify Boyles Law.

To demonstrate Kinetic theory of gases using bromine vapour. Moving initially with very high velocity, the progress of the bromine molecules may be shown to be unimpeded within a vacuum but soon hindered when diffusing into air due to their elastic collisions with the air molecules. Due to the toxicity of bromine the apparatus is designed with safety in mind, the bromine being sealed in a glass ampule which is only broken when safely inside the gas- tight apparatus. Comprises two sturdy glass diffusion tubes, two large bore 8mm stopcocks with rubber bungs, six borosilicate glass cup – tubes, six bored rubber stoppers, twelve short lengths of rubber tubing, two nylon adaptors to adapt tubes to 8mm, one small brush for cleaning tap and one tin of Vaseline.