Science and research

Can you see the contents of the suitcase without opening it? The immediate answer is yes - it needs X-rays. However, as ionizing radiation, they have a detrimental effect on living organisms, which limits their use. There is, however, another way to look inside the suitcase. You have to use a special kind of "light".

Normal", that is visible light, is a type of electromagnetic wave. The distinguishing feature of each wave is its length or frequency.

By introducing new products, which contain numerous chemical compounds, manufacturers are increasingly contributing to environmental pollution. If we continue to do so, there may be a drastic imbalance in the gender balance and, as a consequence, even the scenario of Sexmission by Juliusz Machulski may be fulfilled.
Surely, there have been many a time when you had to deal with a situation where you had no access to electricity and your mobile phone had gone dead. Naturally, the market offers power banks galore to save you from such emergencies, yet we often fail to remember to carry them with us. Besides, they are heavy, unwieldy, and also harmful to the environment.

The lens is an important element of the eye of mammals, birds, reptiles, amphibians, and fish. It allows one to see objects located at different distances clearly. It is possible because images are formed on the retina - another important part of the eye. Clear images are achieved by changes in the shape of the lens.