Hot days, many people bring the thermometer to the sun and then say the temperature is 60-70 degrees Celsius is measuring the radiation temperature, not atmospheric temperature: 00/4: 34 male plants Measuring the outdoor at sunshine. The feeling is always higher than the real temperature of the hot sunshine is taking place and prolonged in the northern provinces, we have received the question that in websites and weather forecasts Currently there are usually a parameter located below the temperature parameters. It is called Real Feel and on hot sunny days, this number is always higher than the temperature figure. Although, Vietnam's astronomical and universal universe is not a meteorological organization , But this is a fairly interesting question about physics. Therefore, I would like to explain the concepts and the principles of this phenomenon
. About the temperature, in the weather forecast newsletter or the hot sun warning of the meteorological agency always has heat figures Specific degree. In these newsletters, Vietnam has almost never recorded the number to 45-50 even 60 degrees C because it is the actual temperature of the atmosphere. In the international forecast newsletter, the temperature number The highest in the day is usually in bold, the most big in the chart
This number indicates the highest atmospheric temperature of the day ("hi" besides standing for High / Highest). The bottom of international forecast newsletters always have two lines of Real Feel (real feeling Terms) and Real Feel Shade (real feelings in shade). Both are higher than atmospheric temperatures, with differences not small. To understand the reason for this, need to understand some specific principles. People do not feel the actual temperature. What you feel is just the heat exchanger of your body with the environment. Maybe you know that human body temperature ranges from 36.5 - 37.5 degrees C. If not you Fever or cold, the body temperature will always be at that even if the ambient temperature is higher or lower than that level, thanks to the circulatory system - or easier to understand is the flow of blood in your body
So, blood in your body keeps heat stable for you to be against? Of course, is against the body's heat exchange with the environment. Why feel cool when there is a fan? When the ambient temperature is too low compared to the body temperature, the heat loss is fast and the system Your circulatory must operate stronger to ensure body temperature, which causes cold feeling. Behear, when the ambient temperature is high, you "get" the amount of heat that you don't want, so you Has a hot feeling. In other words, you only feel the heat loss or get extra heat, not feel the temperature of the atmosphere. As the reason mentioned above, your Real Feel is different from the real temperature of the atmosphere. This difference due to many factors. For example, humidity affects your feelings, especially in these hot days: humidity is too low, the air is dry and you'll see even hot, vice versa too high humidity will prevent the heat. Escape heat through sweat and therefore also cause heat. Thus, inappropriate humidity will make Real Feel higher in this case. An familiar factor is the wind. Try doing a experiment like this, if you have a thermometer. In your closed room between the hot sun, keep track of the only thermometer number and after turning on the fan. You will find them like each other, although it is clear that you are more cool than somewhat with a fan. Do it is very simple: the fan cannot change the temperature of the room. However, you are cooler because of the wind, the air shifting continuously makes the air layer in direct contact with your skin constantly blown and replace with other air layers. If there is no wind, air layer Right to your skin receiving heat radiation from the body will always have a close temperature equivalent to your body temperature. This explains the two things you may encounter: When it is too hot, the fan blows out hot winds, because the new air replacement will be hotter than the air layer in contact with your skin. But if you don't have a wind long, you still see the fan is because you have sweating and need the wind to evaporate that sweat, facilitating the heat escape continues. In a single Rooms or in a shade have low temperatures, when someone reaches his hand or a sensitive skin area, you see a bit warm. That is the temperature of the air layer to receive the heat radiation directly.Tay of any ordinary ordinary people, not due to the interior or spell that some place is expellable to find ways ... Heat for your wallet. Do so, if it doesn't have a wind or very little wind, you will also see Real Feel higher than the atmospheric temperature. In addition, the thermometer measured outside The street in the middle of noon has a very high temperature, it is another story. It is not pure temperature of the atmosphere that it is combined with radiant temperature directly from the sun. If it carries that thermometer into the shade, the index will decrease immediately because it is the real temperature of the atmosphere. Someone gives the thermometer out . Dịch vụ:
Thiết kế website,
quảng cáo google,
đăng ký website bộ công thương uy tín
