The much talked about Internet of Things can be made with a generalist $3 WiFi chip. It has 8 pin and I talk you through the fabled ESP 8266 MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

I know I have an hour coming back on a walk, so I dive into the Sun armed with a definition of convection and we show that inner 2/3 of the Sun has everyday conduction, and is a still as a rock you heat in a fire. We find out more as we follow the energy and science around. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

Just using these lasers I discover their dark secret: Some have a short lifetime. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

Care is shown to rewire a multimeter so the LCD is directly above the wire it is measuring. The pesky issue of students not switching the damn thing off is solved with a tilt gravity switch that offs the device when placed face down. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

With only few minutes left to podcast can I rate off the famous 118? MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

Short podcast while driving to deliver a rubber duck with a magnet inside that dances in an alternating magnetic field MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

A well designed lesson can be deconstructed, analysed and derisked by preparing exercises that step through the processes in a non critical setting. In this case making the Rubber Duck dance checks off that an experiment can be plugged in and tests if it is understood that there is an alternating magnetic Field MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

It is true you have to rotate an electron twice to get back to the start. It is called S2 symmetry. You can tell I enjoy the maths but I admit the explanation is terrible. The best I can do is that the electron is like a sock or glove that can be pulled inside out. In truth there is no easy way of getting to the mathematics at least that I know off. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

I found this totally amazing. It seems very solid proof of evolution and also keen reasoning on the relationship between species. I think equal spacing refered to here does not mean physical space but ecological space. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.

The evolutionary evidence is arranged so we can have an intelligent appreciation of the origin of the Tasmanian Devil. It is particularly well argued and balanced. Could the Megafauna have been hunted before the invention of the spear and the killing stick (hunting non return boomerang)? The find of the Devil teeth necklace from 7000 years ago has real pathos in the context of this book. The end of the read is accompanied by ever loud bird calls. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.