Tag: Physical
Why do ice cubes stick to my fingers?
Ice cubes sometimes stick to your fingers and when they do, it can be particularly unpleasant. In question, a physical phenomenon ultimately very simple. You will also be interested It…
LCLS-II: World’s Most Powerful X-Ray Nearly Completed
The LCLS-II X-ray laser, in blue, on the left, is shown next to the existing LCLS in red, on the right. The LCLS uses the last third of Slac’s 3…
Tetraneutrons, mini neutron stars, would have been produced on Earth!
They have been hunted for almost 50 years and for 20 years they seem to be pointing more and more. Tetraneutrons, nuclei composed only of neutrons, much as if they…
Researchers lower the freezing point of water to -44 ° C
Pure water normally freezes at 0 ° C. But under certain conditions, the melting temperature can be significantly lowered. This ice nucleation process is essential in weather phenomena such as…
Controlled fusion: what is it?
The fusion controlled is one of the dreams pursued by physicists. It is not only a question of reproducing on Earth the reactions of thermonuclear fusion that make the stars…
Thermal radiation: what is it?
We qualify as thermal rays the amount of energy that a body whose temperature differs from absolute zero yields in the form of radiation of electromagnetic nature and wavelength between…
Mathematical game: Notre-Dame de Paris and the fourth dimension
A monument almost disappeared and the hearts of the French are touched. Money is pouring in to fix it to the point that some are shocked. Wouldn’t it be better…
Quiz: do you know the units of measurement?
In what unity is the work of a force expressed? What is the official unit of measurement for temperature? How much is a nautical mile? An urgent quiz before reading…
What is the most powerful nuclear bomb in history?
On October 30, 1961, a 57 megaton atomic bomb exploded over the site of Novaya Zemlya, Russia. Called Tsar Bomba, it is the most powerful bomb in history. It is…
The Riddles of Time | Case
Everyone understands what we are talking about when we talk about time. Who doesn’t even think they know this one intimately? You don’t have to be Kant, Einstein or Heidegger…