Since Bohr's bold step in assuming that the energy levels of atoms are quantised, a new theory call 'Quantum Mechanics' was developed which is able to predict correctly the energy levels of the hydrogen atom. In this theory the actual movement ( if any ) of the electron is not specified but a probability distribution is given.Similar conversation also applies to a Bhor Atom. As the electron goes around the nucleus its energy would continue to decrease and collide with the nucleus. But I think I have an answer for this. Bhor's Theory also suggessts that energy of an electron is quantised. So it should not have energy less than -13.6eV. That prevents the electron from colliding with the nucleus. Am I right?
Electromagnetic radiation is a type of energy that is transmitted through space in the form of waves. It includes a wide range of wavelengths, from radio waves to gamma rays.
Electromagnetic radiation travels in a straight line at the speed of light, which is approximately 299,792,458 meters per second in a vacuum. It can also travel through some materials, such as air and water.
The different types of electromagnetic radiation are categorized on a spectrum based on their wavelength and frequency. The types include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
Electromagnetic radiation has many practical applications, including communication technology such as radio and television, medical imaging like X-rays and MRI scans, and generating electricity through solar panels.
Exposure to high levels of electromagnetic radiation can be harmful to living organisms, causing damage to cells and DNA. However, low levels of exposure, such as from radio waves and visible light, are generally considered safe and even necessary for life.