Sunlight contains far infrared rays, but you can't enjoy far infrared rays alone when sunbathing, but there are some special substances in nature that can absorb the energy of the human body or its surrounding environment, then convert it into far infrared rays and radiate it. There are three types: 1. Ceramic powder II. Long toner 3. Tourmaline powder ★ The effect of far infrared ray is 1. Can improve microcirculation II. It can improve the function of the immune system. It can increase skin activity. Can improve joint pain 5. It can increase the oxygen content of body 6. It can promote metabolism ★ The practical application of far infrared rays has been widely used in the adjuvant treatment of many diseases around the world in recent years, mainly using the characteristics of far infrared rays to promote blood circulation to achieve the purpose of adjuvant treatment. The list is as follows: 1. Medical treatment: wound patch, ceramic health care instrument. 2. Industry: Far infrared fuel-saving accelerator. 3. Textiles: far-infrared fabrics. 4. Beauty: Far-infrared oven, far-infrared slimming cabin Responder: Stepping on a train-manager level 4 2- 16 2 1:39 Discovery of solar infrared rays Herschel has a question in his heart. Does he usually observe the same amount of heat in different colors and colors of sunlight? 1800, he designed a simple experiment to make sunlight pass through a prism to produce a color spectrum. Three thermometers coated with black alcohol balls (which can better absorb radiant heat) are used, one of which is placed in a certain color of visible light, and the other is placed outside the visible light as the background value measurement. It is found that the temperature rises from purple light, blue light, green light, yellow light, orange light to red light in turn! Even more incredible, he found that the temperature next to the red light area was higher, where the naked eye could not see the light, and there was light that the eyes could not see! This is the first time that human beings have discovered invisible light, which is called "infrared". However, it should be added that, in fact, the energy emitted by the sun is the strongest in green light with a wavelength of 5800A. Hausler measured the longer the wavelength, the higher the temperature, because in his experiment, the light energy with long wavelength was concentrated, while the light energy with short wavelength was dispersed. This year (2000) happens to be the 200th anniversary of the discovery of infrared ray. Now, human beings can do many things with infrared detection: astronomy, medical care, security, military affairs, resource investigation, satellite cloud pictures, sea temperature observation and so on. Answer: wswss 1 1986- The Great Magician Grade 9 2- 16 2 1:39 Infrared ray was discovered by a famous foreign scientist Herschel in a scientific experiment. He found that there is a magical light beyond the visible light of the sun, which is invisible to the naked eye, but its physical characteristics are very similar to visible light. Because it is located outside the red light in visible light, it is called infrared. The wavelength range of infrared ray is very wide, from 0.75 to 1000 micron. Among the infrared rays, the near infrared ray has a shorter wavelength, while the far infrared ray has the longest wavelength. According to the different requirements of users, the standards are different. In practical applications, infrared rays with a wavelength greater than 2.5 microns are usually called far infrared rays. Far infrared ray is an electromagnetic wave; It is invisible light, but it has all the characteristics of visible light. The main physical characteristics of far infrared are as follows: 1. Emissivity: Because far infrared is an electromagnetic wave in the light range, it can be transmitted directly without any medium like light, which is the emissivity of far infrared. 2. Permeability (penetrability): Although far infrared is an electromagnetic wave belonging to light, it is different from other visible light in penetrability. Far infrared has unique penetrating power, and its energy can act on subcutaneous tissue to a certain depth, and then through blood circulation, the energy can reach deep tissues and organs. This is the permeability of far infrared rays. 3. Absorption and vibration: According to Kirchhoff's radiation law, any good radiator must be a good absorber. At the same temperature, the greater the capacity of the radiator, the stronger its absorption capacity, which is proportional. All objects containing far infrared rays can radiate and absorb far infrared rays, and radiation and absorption are equal. The human body emits far infrared rays all the time. According to the measurement, the wavelength of the far red line emitted by the human body is about 9.6 microns. Therefore, the far infrared wavelength generated by Jianlong brand health products is 8- 15 micron, which matches the peak value of human body surface, forms the best absorption, and can be converted into internal energy of human body, which has a very close influence on the origin, occurrence and development of human life. Therefore, we also call this wavelength range far. Therefore, far infrared rays have good absorption and vibration.