Total internal reflection added 14.01.2016
Refraction of light added 12.01.2016
Wimshurst machine added 14.12.2015
Electromagnetic induction added 14.12.2015
Pendulum added 09.11.2015
Star trail added 26.10.2015
Total Lunar Eclipse 2015 added 12.10.2015
Ursa Major added 21.09.2015
Steam engine added 07.09.2015
Vacuum Scale added 03.08.2015
Variable Resistor (with winch) added 20.07.2015
