The science of the invisible
Many concepts in science are difficult to grasp. Some of them are challenging mathematically; some of them by their complexity. And some of them are just on a completely different scale. Molecules, atoms, subatomic particles – all of these form an extremely useful framework of concepts in science. Why is it that the whole world firmly believes in something that we can never see? There is a strong experimental evidence supporting their existence. Even though, they are impossible to see and even difficult to grasp mentally, particles of all sorts have piled up a huge amount of evidence of their existence. Electricity, radio, electronics, drugs and other chemicals, nuclear power plants, and so much more is possible only because the theories are valid. A crucial problem in the microscopic science has always been visualisation. The most illustrative way to visualise particles is dispalying them in the cloud chambers. Even the smallest elementary particles trigger precipitation of liquid droplets resulting in easily visible cloud tracks. Nowadays, cloud chambers have been replaced in science by electronic instruments, but in terms of hands-on experience, they are unbeatable.
All particle images above are released under CC-BY-SA 4.0 licence