20 17 what are the top ten "science" rumors?
Interpretation expert: Professor Shen Zheng from Peking University College of Psychology and Cognitive Science.
Truth: The test of human brain function is very complicated, not as simple as weighing an object. It needs a comprehensive test of the human brain, such as its structure, physiological function and many psychological functions, including reading ability, memory ability, intuitive thinking, reasoning ability and so on. Therefore, it is absolutely impossible to measure the result by answering a few questions.
2. Man plans to land on the moon again, but Hawking warned that "there are aliens on the back of the moon!"
Interpretation expert: researcher of Yongchun Zheng National Astronomical Observatory.
Truth: The mission to the moon never found an alien base on the back of the moon, nor did it find any traces of artificial buildings or human activities. The back of the moon looks like a desolate continent that has been preserved for 4 billion years.
3. Gravitational wave news screen needs to wear "anti-gravitational wave radiation suit" for special protection?
Interpretation expert: Zhang Shuangnan, researcher of Institute of High Energy Physics, Chinese Academy of Sciences, chief scientist of Yan Hui Satellite.
Truth: Gravitational waves, as a kind of space-time fluctuation carrying energy, have always existed in the universe and have little influence on human body, so it is impossible to strengthen protection.
4. Popular videos make a fuss about "plastic". Is laver vermicelli rice made of plastic?
Interpretation expert: Deputy Director of Kai Zhong Kexin Food Nutrition Information Exchange Center.
Truth: Single-layer laver itself is translucent, and the fishy smell is also the inherent taste of seafood, but it may be because laver is too "old" to be chewy-laver usually starts sowing in the annual Bailu solar term. If it is properly managed, it can be harvested four or five times a year, in which the first water (the first crop) has the best quality and the best taste, and the last water has the worst quality and a tougher taste.
5.Xi 'an's woman died after being vaccinated after being bitten by a dog. Is the rabies vaccine useless?
Interpretation expert: Lu, Assistant Director of Rabies Ward, Institute of Virology, China CDC.
Truth: After rabies vaccination, there is still the possibility of accidents. For example, the head and face are exposed to level III or II, a small amount of virus remains after incomplete wound treatment, and the injured person does not use passive immune agents correctly according to regulations. Before the vaccine works, the virus has invaded the nervous system, eventually leading to rabies. But this does not mean that rabies vaccine is useless.
6. A major breakthrough has been made in cancer screening. Can a drop of blood "detect cancer"?
Interpreter: Deputy Director, Cancer Prevention and Research Office, China, Chen Wanqing.
Truth: As early as 20 13, when the media first reported the research results of "tumor marker heat shock protein 90α(Hsp90α)", some experts once said: "The term" blood drop to detect tumor "is very inaccurate, to be exact, it should be called" tumor monitoring ". Cancer patients are tested once before treatment, and then blood samples are taken after treatment. By comparing the changes of Hsp90α content, doctors can be assisted to evaluate the therapeutic effect and can be continuously monitored. "
7. Cold stimulation weakens immune defense ability, and freezing can lead to arthritis?
Interpretation Expert: Chief Physician, Department of Osteoarthrosis, Sun People's Hospital
Truth: By the age of 40, almost all people will have some osteoarthritis lesions in their weight-bearing joints. In some cases of overuse, such as occupational injuries, athletes, etc. Joints will reach their service life ahead of time, and osteoarthritis will occur ahead of time. Osteoarthritis occurs in almost all vertebrates except humans, and only two inverted mammals are not affected by it, namely bats and sloths. This universality reminds us that osteoarthritis is not so much a disease as a natural reaction of joints to wear.
8. Shandong parturient died of heatstroke. Is it really impossible to blow the moon?
Interpretation expert: Zhang Jun, chief physician of Obstetrics and Gynecology, anzhen hospital.
Truth: The biggest physiological change of puerperal women is the reproductive system. The lochia must be cleaned up in time, otherwise it may cause infection. Therefore, proper bathing and keeping clean are more conducive to maternal health. Maternal women also secrete a lot of sweat, which is often called sweating. If it is not cleaned in time, it may also cause infection. Therefore, it is necessary to wash your hair and take a bath, and also to properly ventilate to help the parturient dissipate heat and sweat.
9. Watermelon doesn't rot for 400 days because it is sprayed with preservatives?
Interpretation expert: Academician of Chen Junshi China Academy of Engineering, food safety expert.
Truth: Watermelon skin has a tough surface, but it is actually breathable. Although there is a small amount of natural wax on the surface, the water of watermelon will still be lost during breathing. If there is no trauma on the surface of watermelon, it is not easy to be invaded by bacteria and mold.
10. The "Uncle Stealth Video" network became popular, and Zhejiang University developed a "quantum invisibility cloak"?
Interpretation expert: Guo Guangcan, academician of China Academy of Sciences and quantum information scientist.
Truth: "invisibility" has existed as a technology, but it is not the magical "invisibility" that everyone understands. For example, everyone has heard of stealth aircraft, but for a microwave band, "stealth" is relative. At present, no new materials have been found that can make all microwave light waves "invisible". Generally speaking, an object can be seen when it is reflected into the eyes, but if you coat it with a material, light can't be reflected in people's eyes. This material is not available yet.