The 2022 Nobel Prize in Physics has been awarded to three scientists working on experimental and theoretical aspects of quantum mechanics. As set out in the verdict of the Royal Swedish Academy of Sciences, the prize was awarded "for experiments with entangled photons, establishing violations of Bell's inequality and pioneering quantum computing".
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.

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.