Meteor

Exploding meteor to be measured on the Richter Scale

A bright flash of light cuts through the sky. Three minutes later a giant bang follows, producing a pressure wave equal to an earthquake of 2.0 on the Richter Scale. The inhabitants of the US state of Michigan witnessed a rare phenomenon in the late evening hours of January 16.
Lightning

Is it safe to sit in a car in the event of lightning?

It is true that a car is a very safe place when it thunderstorms. That's because a car has a metal body that works like a Faraday cage. It is named after the British physicist and chemist Michael Faraday, who proved that an electrical current always follows the outside of a metal structure, so that no current enters.
Stars

Earth's shadow takes a bite out of the moon

About the lunar eclipse The earth casts a long shadow into the space, through which the moon occasionally passes. Sometimes the moon is completely covered by the darkest part of the Earth's shadow and we get a total lunar eclipse. Other times, that shadow falls only partially on the moon and so we also see a partial lunar eclipse - as now.
Food

What makes milk boil over quickly?

Cow's milk consists of approximately 87 percent water, and the rest is fat, protein and milk sugar. When you heat milk, the proteins gather together and rise to the surface of the liquid with the fat. That is the skin that floats on the warm milk. At some point the milk becomes so hot that the water in it starts to boil and forms bubbles of steam.
Sharks

Sharks from a to z: Learn more about sharks

From white shark to whale shark: guide to known and lesser known sharks What is the most dangerous shark in the world? Which shark is the largest? And is the lemon shark yellow in color? Sharks are fascinating beasts, and over 500 different species occur in the oceans. Not all of them are dangerous to humans, and some are so rare that they don't even have a Dutch name.
Earth

What happens to the earth when the sun goes out?

When the sun has used up its hydrogen for about four billion years, it expands into a red giant star with a radius that extends to where the earth is now. The sun then swallows Mercury and Venus. The fate of the earth is not yet certain. When the sun expands, it loses part of its mass, reducing gravity.

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Animals

Why do the red crabs migrate on Christmas Island?

Red crabs migrate to give birth Around 120 million land crabs live on Christmas Island in the Indian Ocean, who leave the forest en masse once a year and migrate to the sea to mate. Their migration from land to sea takes place from October to December, when the rainy season starts. The air is then moist, which creates the ideal conditions for the five to seven day long journey.
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Editor'S Choice

This is the best way to study for your exam | 2019
Brain

This is the best way to study for your exam

1. Sleep enough © Shutterstock Sleep is essential for your brain. While you are in dreamland, important connections are strengthened and new ones are added, and waste is cleaned up. In 2014, American researchers demonstrated that your brain can shrink due to lack of sleep - especially the front lobe, which are important for concentration, memory and problem solving, among other things.
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Breakthrough: Electric cars start charging while driving | 2019
Cars

Breakthrough: Electric cars start charging while driving

They make no noise, do not smell and have a very small ecological footprint. But despite these benefits, electric cars still have a major problem. Their operating radius is limited and charging takes a relatively long time. However, researchers at Stanford University have achieved an outright breakthrough that could solve all the problems of the electric car.
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That way you can scare you to death | 2019
Brain

That way you can scare you to death

In 1977, a plane crashed on a house in the United States while the six residents were watching TV. The family could retell it, but all the people on board died. The neighbor next door also died - although her house did not have a scratch. Cause of death: The woman was shocked to death.
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Who invented our time schedule? | 2019
History of Science

Who invented our time schedule?

Thousands of years have been planed for our time structure. Around 4,000 years ago, the Babylonians in present-day Iraq introduced a calendar that was divided into years, months, and weeks based on the movements of the great celestial bodies. A year was the time when the earth revolved around the sun once, and a month was the time it took the moon to revolve around the earth.
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How does an induction stove work? | 2019
Technic

How does an induction stove work?

An induction stove works very differently from other heat sources. On such a stove, only the pan becomes very hot, while the hob itself only gets a little hot. The secret is an electric coil under the hob. Magnetism generates resistance When current flows through the coil, a high-frequency magnetic field is created.
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Is it true that Inuit has 200 words for snow? | 2019
Language

Is it true that Inuit has 200 words for snow?

In numerous books and TV programs it is claimed that Inuit has 23 to 200 words for snow. But that is due to a misunderstanding that was brought to the world in 1911 by the anthropologist Frans Boaz and then passed on by journalists, amateur scientists and novelists, who grossly exaggerated the word supply of the Inuit.
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Resistant HIV virus spreads to several countries | 2019
AIDS

Resistant HIV virus spreads to several countries

Although there are 37.9 million people worldwide infected with the HIV virus, only a small percentage of them eventually die from AIDS-related diseases. This is mainly due to the so-called anti-retroviral drugs that came on the market in the 1990s and have since been controlling the deadly virus.
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Popular Categories

How does a uranium centrifuge work?
Periodic table

How does a uranium centrifuge work?

Natural uranium consists almost exclusively of two isotopes: 99.3 percent uranium-238 and 0.7 percent uranium-235. Only the latter type can be split and can start a chain reaction in a nuclear reactor. The uranium can therefore only be used if the uranium-235 content has been increased, or if the uranium has been enriched.
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These are the five oldest cities
History

These are the five oldest cities

They have endured numerous eras and offer a glimpse into the very beginnings of civilization and into the lives of modern city people. Immerse yourself in our list of the five oldest inhabited cities in the world. Maybe you have ever been there. Number 5 Rey, Iran - ca. 3000 BC. Proofs of habitation have been found that date back to 6,000 v.
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Steep slopes made the Pyramid of Cheops possible
Past

Steep slopes made the Pyramid of Cheops possible

A team of British and French archaeologists were looking for inscriptions in an old quarry in the Egyptian Hatnub when they happened to make a much more important find. Under loose sand and stones they found a slope that was used 4500 years ago to transport large boulders from the quarry.
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This is the best way to study for your exam
Brain

This is the best way to study for your exam

1. Sleep enough © Shutterstock Sleep is essential for your brain. While you are in dreamland, important connections are strengthened and new ones are added, and waste is cleaned up. In 2014, American researchers demonstrated that your brain can shrink due to lack of sleep - especially the front lobe, which are important for concentration, memory and problem solving, among other things.
Read More
Is there pig in winegums?
Food

Is there pig in winegums?

By boiling pig skin and veal bones, gelatin is extracted, a yellowish binder without odor or taste. It is processed into winegums to make the sweets malleable. Gelatin is a breakdown product of collagen: a protein from tendons, skin and bones. You can replace it with pectin or agar agar.
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NASA quickly convenes the press: Unveiling new find
Exoplanets

NASA quickly convenes the press: Unveiling new find

NASA has found something new outside our solar system and tonight Dutch time the discovery will be made public by the Washington headquarters. The space organization announces this in a press release. The Americans are still cautious with details about the discovery, but do make it known that they are planets orbiting around stars other than the sun: so-called exoplanets.
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Which fish is the fastest on earth?
Fish

Which fish is the fastest on earth?

It is difficult to say exactly which fish is the fastest and how fast it goes, but one of the highest measurements is around 75 km / h - of a tuna. Fish move on by applying a backward pressure in the water with their body or with their fins. With most fish, large swimming muscles run the length of their body.
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