One of my favourite games as a youngster was to skip stones on water. I was really bad at it – and still I became a physicist, a rocket scientist even. So, why does a stone skip on the water? You can find answers here at Quora. It is basically about vectors and where they…
Wherever you are early November you can see our closest planet, Venus, glimmering in the morning sky. Sometimes it appears as a morning star, sometimes like a bright evening star. Asteres planetai was the term used in ancient Greece before anyone got clues enough to build up a knowledge about these wandering stars. Now Venus is illuminating the…
I asked a stupid question on Google+. I rather often do, so that is not unusual. At about the same time of that post, I called mixing up the terms scientists, researchers and engineers like assigning grey colour to a blue sky, something more than simply not getting categorizations straight, on this very blog. I…
There are many texts out there which discuss the reflection of light from surfaces. A good example would be found here. Now, as well as these articles are written, I do have a question. How come that water can reflect light? Isn’t it supposed to be transparent? Mirrors work in such a way that electrons…
One of life’s mysteries: How can you run on a pool of Non-Newtonian fluid without asking how that is even possible? Truth be told, I suspect that the question comes into people’s minds. Then they turn off their ears, when they hear the word “physics”. So let’s modify that question up there: How can you…
Don’t you just love it when they tell you that scientists have invented or developed something, let us say, for example, a new type of sock with scientifically optimized compression for intensive sport and recovery? This is not science. People with background in science, i.e. a degree in science, may work on the problem of…
“It’s beautiful!” Ok. That is reason enough to look at the dark sky. But, of course, there’s more to it. The good thing is that there is a lot more you can find out about the solar system just by looking at the moon and our closest planets with the naked eye! The image above…
