Making a glass spreader

 A job for a quiet Sunday. Making glass spreaders for bacterial colonies, ready to do some experiments about natural antiseptics found in common plants on the growth of bacteria. We will also look at the effectiveness of kitchen surface cleaners.

Electromagnetic Braking

 Lenz's Law application - making an electromagnetic brake using a strong magnet and non-magnetic Aluminium

Analog Computing

How do analog computers compare to digital ones? Can students easily program them and get anything useful out? These computers are on the rise and need to be with  with our array of Macs, Windows, and Unix machines and the data gathering Physics sensors and phones.

More Maths

With exams done for the year and internal exams over now is the time to create a stock more maths questions in similar styles and levels of difficulty as the exam questions for the students to practice on once they have done all the book questions

 

Ore on a Stick

 One of the easiest ways of extracting small amounts of ore - powdered rock on a stick. Works well with Malachite and Iron ore haematite. Copper sometimes get small balls 0.5mm and the iron get good iron filings

Modelling the expanding Universe

 Having a model of the Universe is handy

Simulations

Sometimes there is no other way of explaining science than to use a simulation. Here I am using counters in make believe cells to show how infection can move through a population like the plague or Covid. The model also shows how herd immunity works.