Using an Oximeter

 One of the fun things we do, testing whether the students have a heartbeat and their Oxygen stats. Some students with painted nails appear to be dead!

Investigating the energy in different fuels

 Looking at different alcohols to see how they compare. The equipment doesn’t work well due to the heat loss, so it is up to the students to design a better experiment.

Equation of a Circle

 Using the equation of a circle and a point on the circle to work out the equation of a tangent.

BSC Expo

 Having a day off visiting the @BSC_EXPO in London. Checking out some new equipment to buy for the film making

Ninja star 2

Unlike the last Ninja star video where the Ninja star is on the VdGG this time its the electrons from the Ninja star that are being used to neutralise the charge on the Van de Graaff generators dome and this causes motion.

The Ninja Star

The Ninja Star is actually called a Hamilton's mill but in physics it's called a Electrostatic pinwheel. The reason it gets spinning is because the spinner is positively charged, like the dome. Each point has a strong electric field around it. Air molecules close to the points lose electrons and become positively charged ions - their electrons were attracted to the points and used to neutralise some of the charge on the dome. Positively charged ions are repelled by the positive star's points and move away. The points move in the opposite direction (Newton's 3rd law) so the star Spins.

Thermoelectric Converter

Having some fun with the thermoelectric converter, Ice cold water on one side and near boiling water on the other and getting the fan to spin for quite a while, then repeating with different temperatures in both and timing the fan movement.