Today’s curious shrimp cold knowledge sharing,
is here as scheduled!
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· Will watering a large mouth damage the heart?
Sometimes when we are thirsty, we can't help but drink water, but we don't know that drinking too much water at one time will quickly enter the blood, causing an increase in blood volume, and the heart's workload and myocardial oxygen consumption will also increase accordingly.
In order to adapt to the increased work burden, the heart will undergo a series of structural changes, which is what medically refers to ventricular reconstruction, which leads to serious damage to heart function, and gradually develops symptoms such as dyspnea, shortness of breath, fatigue, and edema. It is more obvious after work, and some patients are even unable to perform physical activities. For patients with heart failure, drinking too much water may even be life-threatening.
In fact, it is best to drink water in small amounts and multiple times, each time at about 200 ml, that is, about one ordinary tea cup, and don’t have to wait until you feel thirsty before drinking water.
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· Can't stand the sound of nails scratching the blackboard?
Whether it is nail scraping the blackboard or foam blocks rubbing the glass, these sounds are annoying and unbearable not because of their sharp and harshness, but because of their sound frequency.
The sound that we normally hear is between 20Hz and 20000Hz, and the frequency band for daily communication and speaking is between 80Hz and 260Hz.
. Research has found that we humans are most sensitive and disgusted with the sounds in the 2000Hz to 4000Hz band, and the sound of nails scratching the blackboard and foam blocks rubbing against the glass is within this band, so we feel irritable and unbearable.
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· What is the difference between soap and soap?
The main ingredient of soap is the metal stearic acid salt, which is a representative active agent that turns oil into droplets and suspends in water. There are also some fillers such as water glass, which can make the soap harder and more delicate.
Its production process is relatively simple, and the cleaning effect is better than that of soap, but its irritation is much greater than that of soap, so it is basically used to wash clothes, shoes, etc.
, and soap is an alkali salt with a pH of 9.5 to 10 composed of fat, oil (mainly added vegetable oil ) and salt. The surface contains anionic active agent, which emulsifies the skin surface substances and removes dirt by forming soap salt. The production process of
is relatively complex, which is less alkaline than soap, but has a high fat content and is less irritating to the skin than soap, so it is usually used to clean the skin.
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· The pupils only respond to light?
When we walk from the dark to the bright spot, or look directly at the sun, our pupils will change accordingly, because it will react to light.
In fact, not only that, the pupils can also reflect a person's state of arousal, interest or mental exhaustion. In addition, FBI even uses pupil dilation to detect whether a person has deceptive behavior.
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· Why has face-to-face social networking decreased?
There is a social replacement hypothesis that people spend on social media replaces face-to-face interactions with people close to their friends, family and other people, which is not conducive to mental health and a sense of happiness.
However, a time-use survey proves that the increase in social media usage time occupies time for other media, such as TV. Moreover, social media can also strengthen people's connections through instant messaging tools.
In fact, work and commuting take up most of people’s time, and that rest of the time is mostly spent solitude and online socializing rather than face-to-face socializing. Experts believe that face-to-face interaction is a time use priority issue and a time availability issue.
"We live in a society where work and media consumption are placed above everything else. We lack the time for face-to-face interaction and do not pay attention to this matter."
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