Do cats and routers radiate?

There is a certain amount of radiation, but it is very small and will not cause any harm to the human body. Radiant energy radiates from a radiation source in all directions in a straight line. The energy emitted by an object through radiation is called radiant energy. Radiation is calculated in roentgen per hour (r). An important feature of radiation is "equivalence". An object (gas) radiates outward regardless of its temperature. Object A can radiate to object B, and object B can also radiate to object A. This term is often used for ionizing radiation. Radiation itself is a neutral word, but the radiation of some substances may bring harm.

Radiation refers to the transmission of energy in the form of waves or subatomic particles. Radiant energy radiates from a radiation source in all directions in a straight line. Radiation radiates outward in the form of electromagnetic waves and particles (such as alpha particles and beta particles). ) Radio waves and light waves are electromagnetic waves. Their propagation speed is very fast, which is the same as that of light wave in vacuum (3×10.8 m/s). Visible light also belongs to radiation. Generally, it can be divided into ionizing radiation and non-ionizing radiation according to its energy and ability to ionize substances. This term is usually used for ionizing radiation. Ionizing radiation has enough energy to ionize atoms or molecules, but non-ionizing radiation does not.

Radioactive substances refer to substances that can emit ionizing radiation. There are three main types of ionizing radiation: α, β and γ radiation. Ionizing radiation has high enough energy to ionize atoms. Generally speaking, ionization means that electrons are knocked out of the electron layer by ionizing radiation, making atoms positively charged. Because cells are made of atoms, ionization can lead to cancer. A cell consists of about one trillion atoms. The probability that ionizing radiation causes cancer depends on the radiation dose rate and the sensitivity of the organism receiving radiation. α, β, γ radiation and neutron radiation can accelerate the ionization of atoms with high enough energy.

Non-ionizing radiation The energy of non-ionizing radiation is weaker than ionizing radiation. Non-ionizing radiation will not ionize substances, but will change the rotation, vibration or valence electron orbital state of molecules or atoms. For a long time, people have not studied the effects of non-ionizing radiation on living tissues. Different non-ionizing radiation will produce different biological effects.