Is thermal radiation harmful to human body?

Is thermal radiation harmful to human body?

Is thermal radiation harmful to human body? The world is full of all kinds of radiation, and thermal radiation is also a kind of radiation that we are very familiar with. I have collected and sorted out the relevant information about whether thermal radiation is harmful to human body. Let's have a look.

Is thermal radiation harmful to human body? 1 Thermal radiation is due to long-term work in high temperature environment, which leads to vasodilation and congestion of lower limbs and fainting; Heatstroke is caused by long-term exposure, which leads to perspiration dysfunction. For patients with hypertension, cardiovascular and cerebrovascular diseases, in the environment of high temperature, humidity, no wind and low pressure, human perspiration is inhibited, the stored heat in the body is increasing, and the oxygen consumption of myocardium is increasing, which makes the cardiovascular system in a state of tension, and sultry heat can also lead to vasodilation and increased blood viscosity, which is prone to brain injury. Symptoms such as bleeding, cerebral infarction and myocardial infarction can lead to death in severe cases.

What harm does thermal radiation do to human body?

Heatstroke: It mostly occurs in hot work with dry heat or strong damp heat. At this time, it is difficult for the human body to dissipate heat, resulting in heat accumulation in the body and rising body temperature. The clinical manifestations are overheating and central nervous system symptoms, with sudden onset, limb pain, headache, dizziness, nausea and vomiting before illness, followed by high fever, and the body temperature can reach above 40℃. After sweating, there is "closed sweat", the skin is hot and red, the pulse is fast and weak, and the breathing is shallow; In severe cases, coma, epileptic convulsion and pupil contraction may occur. If he is not rescued in time, he may die of circulatory and respiratory failure.

Suggestion: Heat exhaustion: also known as heat syncope and heat collapse. Most of them occur under the meteorological conditions of high temperature and strong thermal radiation. The pathogenesis of this disease is still unclear. Some people think that it is the result of peripheral blood vessel dilatation caused by heat, and the decrease of circulating blood volume caused by water loss, which leads to poor blood supply to the brain. Clinical manifestations are characterized by acute onset, dizziness, headache, palpitation, nausea, vomiting, pallor, excessive sweating, wet and cold skin, low or slightly high body temperature, weak pulse, decreased blood pressure and syncope. Generally, it will not cause circulatory failure.

Is thermal radiation harmful to human body? What harm does radiation do to people?

1, promoting cell canceration, abnormal hormones, severe loss of calcium ions, dementia, abnormal pregnancy and abnormal production.

2. All objects in nature are constantly transferring heat in the form of electromagnetic waves as long as the temperature is above zero. This way of transmitting energy is called radiation. The energy released by an object through radiation is called radiant energy, or simply radiation.

According to the different effects of radiation on matter, people divide radiation into ionizing radiation and non-ionizing radiation. Ionizing radiation includes cosmic rays, X-rays and radiation of radioactive substances.

Details of radiation

1, radiation refers to the transfer of energy in the form of waves or subatomic particle motion. Radiation energy radiates linearly in all directions from a radiation source.

2. Radiation and particles in the form of electromagnetic waves (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).

3. Visible light also belongs to radiation. Generally, it can be divided into ionizing radiation and non-ionizing radiation according to its energy level and the ability of ionizing 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 (or rays).

Is thermal radiation harmful to human body? What harm does radiation do to human body?

1. Radiation pollution will affect the circulatory system, immunity, reproduction and metabolic functions of human body, even induce cancer and accelerate the proliferation of cancer cells in human body.

2. The reproductive system is mainly affected by the decline of male sperm quality, spontaneous abortion of pregnant women and fetal malformation.

3. The cardiovascular system affecting people is characterized by palpitation, insomnia, menstrual disorder, bradycardia, decreased cardiac blood volume, irregular sinus heart rate, leukopenia and decreased immune function of some women.

4. It has a bad influence on people's visual system. Because eyes belong to the sensitive organs of human body to electromagnetic radiation, excessive electromagnetic radiation pollution will also affect the visual system. Mainly manifested as decreased vision, causing cataracts and so on.

How to minimize the harm of computer radiation

1. Avoid operating the computer continuously for a long time and pay attention to rest. To maintain a most suitable posture, the distance between the eyes and the screen should be 40~50 cm, so that the eyes can look down or slightly down at the screen.

2. Maintain a good indoor working environment, such as comfortable temperature, clean air, proper negative ion concentration and ozone concentration.

3. The light in the computer room should be appropriate, not too bright or too dark, so as to avoid interference light caused by direct light on the screen. The studio should be kept ventilated and dry.

If you receive radiation for a long time, your health will be greatly affected, so you should pay attention to preventing radiation in your life.