Society

Diamonds
Diamonds

Are diamonds really that rare?

Diamonds
Anyone who walks into a jewellery shop and sees the variety of diamonds on display in all shapes and sizes will find it hard to believe that diamonds are so rare and therefore so valuable.

Most people who are interested in jewellery do not realise how the diamond actually got into this business. In fact, a lot of work is required to get the diamond ready for sale to the public.
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Physicist Kelvin Portrait
Physicist Kelvin Portrait

What is Kelvin

Physicist Kelvin Portrait
Kelvin is a unit of measurement for temperature.

The Kelvin temperature scale is a temperature scale with an absolute zero below which there are no temperatures. Absolute zero, or 0K, is the temperature at which molecular energy is minimal, and it corresponds to a temperature of -273.15 ° Celsius on the temperature scale.

The degree Kelvin has the same size as the degree Celsius. The Celsius is based on the states of aggregation of water, the freezing point of water is 0 ° C, the boiling point of water is 100 ° C. This corresponds to 273.15K (0 degrees Celsius) and 373.15K (100 degrees Celsius) on the Kelvin scale.

When writing temperatures in the Kelvin scale, it is common to use only the letter K without the degree sign. The temperature scale was named after the British mathematician and physicist William Thomson Kelvin, who developed it in 1848.

More about the historical milestones in the development of the Kelvin scale.
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Woman on the phone
Telemarketer

How to protect yourself from rip-offs

Woman on the phone
Fraudsters are becoming increasingly brazen. They ring the doorbell, call or even talk to you in the street. They tell their victims the most fantastic stories in order to get money or information. Recently, there has also been an increase in unwanted sales calls.

Here are a few basic rules to help you avoid becoming a victim of scammers.
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Tablet tube
Tablet tube

Storage of medicines

Tablet tube
Every medicine has an expiry date label. However, as soon as the medicine is opened, germs accumulate and the active ingredients decompose. Many medicines are simply ineffective a few weeks after opening, while others are dangerous.

Which medicines can be kept open for how long and how should they be stored correctly?
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Sunrise
Sunrise

The meaning of life

Sunrise
The question of the meaning of life has been asked since time immemorial. Why do we exist? What is the meaning of life? Does God exist? How did the world come into being? And most important of all: why does life exist at all?

Of course, no one can give a concrete answer to this question. But everyone can find an answer for themselves. Here are some answers to the question of the meaning of life.
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