Welcome to my channel. I'm a physicist and researcher, and my channel proposes tutorials on various subjects related to physics, chemistry, computer science, and DIYs. My videos cover many subjects, such as: - Recovering gold from electronic scraps - The construction of an audio spectrum analyzer - How to make flash paper - How to make fuming nitric acid from household items - How to make sulfuric acid from household items - How to make hydrochloric acid from household items - How to make nitroglycerin from household items - How to make a particle (electron, proton, neutron) accelerator at home - How to generate (relatively safe) nuclear reactions at home - How to play and finish some old videogames on Amstrad CPC, Atari ST, ZX spectrum, and Amiga - Some piano tutorials - ... and more