Physics Physics


Why the stars are shining

Published on in category Physics
Why the stars are shining In the case of a clear night sky, a large number of stars can be seen, which seemingly group into shapes called constellations. Thanks to the starlight, we can now enjoy the view of the night sky. In earlier times, the night sky was used, for example, for navigation. But what is it that the stars shine? Read more

Why the ice is slippery

Published on in category Physics
Why the ice is slippery The fact that the ice is slippery is a matter of course for us. After all, most of us must have ice-skated, skied, or at least slipped on the icy sidewalk. So it may come as a surprise to find that physicists have been working on ice for more than 160 years, and we do not yet have a perfect and clear answer as to why this is the case. What do we know now and why is the ice actually slippery? Read more

Why ice floats on water

Published on in category Physics
Why ice floats on water Iceberg floating on water or ice cubes floating in lemonade are no surprise. In nature, however, it is quite an atypical phenomenon. But why is it that ice floats on water? Read more

Why isn't Pluto a planet

Published on in category Physics
Why isn't Pluto a planet Most of us learned at school that we have nine planets of the solar system and that the last planet is called Pluto. But that has changed one day, and now Pluto is not considered a planet. Why did the professional community take such a step and what is the history of the discovery of this dwarf planet? Read more

Why are there thunders during the storm

Published on in category Physics
Why are there thunders during the storm Thunder is a natural phenomenon that we hear during a storm immediately after lightning. From the time delay between the occurrence of lightning and the recording of thunder, we can determine how far the storm is from us. But why do we hear thunder at all? Read more

Why is the snow white

Published on in category Physics
Why is the snow white Snow is a form of ice and it seems transparent to us. The white impression is caused by its thickening in the form of a snow cover, which is formed by many snow crystals. They reflect and refract light in different directions, and our brain perceives this summary effect as white. Read more

Why is it dark at night

Published on in category Physics
Why is it dark at night The question "why is it dark at night" was asked by scholars many centuries ago. However, they could not find the answer. Although the question seems relatively straightforward, the answer to it is not easy. At least not without the knowledge that science brought in the early 20th century. So why is it dark at night? Read more

Why does the comet have a tail

Published on in category Physics
Why does the comet have a tail The tail of a comet is technically called a coma and is the vapor of the outer ice layer, which evaporates with heating as the comet approaches the Sun. The solar wind causes the coma to always point away from the Sun. The tail glows due to the fluorescence of these gases. Read more