Physical research study report

First, the research background

With the development of human society, more and more new inventions are gradually taking people's lives. Household appliances provide us with convenience and enrich our lives. At the same time, a stealth killer lurks around people. It is colorless and tasteless, and may not be noticed by people in a short time. Over time, it threatens our lives. To this end, we hope that through our research, we can learn more about radiation hazards, find ways to prevent radiation, and give more help.

Second, the electromagnetic radiation in life

Electromagnetic radiation is a physical phenomenon, which refers to the phenomenon that energy is emitted from the power source into space in the form of electromagnetic waves. There are two main categories of electromagnetic radiation: one is the electromagnetic radiation source of nature, from some natural phenomena, such as lightning, typhoon, sunspot activity and black body radiation. The second is a manual electromagnetic radiation source, a manual electromagnetic radiation source, from a number of artificially manufactured systems or devices and equipment, wherein the discharge electromagnetic radiation source, the source electromagnetic radiation source and the industrial frequency electromagnetic radiation source.

Third, the harm of electromagnetic radiation

Between 1969 and 1982, 951 men in the United States and Lizhou died of brain tumors. At that time, the region was developing a number of electrical industries, and most of these people were electricians or electrical engineers. In response, the Texas Cancer Medical Fund conducted a sample test on these people and found that many people's cancer cells grew 24 times faster than the average person. Excessive absorption of electromagnetic radiation can lead to fetal deformation, early death of the bone marrow, cataracts, and lung-induced death.

Fourth, effective protection against electromagnetic radiation measures

1. Shorten the time of contact with electromagnetic radiation

2. Use anti-radiation skin cream.

3. Don't put household appliances together.

4. If there is a manual, it should maintain a safe operating distance according to the instructions.

5. Maintain indoor air circulation.

6. When the appliance is not in use, it is best to turn off the power.

5. The amount of radiation of each household appliance.

Home appliance type radiation intensity

TV set
20

washing machine
30

VCD
30

Copier
40

Computer
150

vacuum cleaner
200

Microwave oven
200

Mobile phone
200

sound
20

air conditioning
20

Perhaps the electromagnetic radiation of these appliances is not very large, but we can't ignore it. Electromagnetic radiation has a cumulative effect, and occasionally one or two times do not see anything wrong, but the accumulation of the sun and the moon to a degree will slowly cause harm to the human body.

Note: three major elements of harm to people

a, the intensity of the radiation source

b, the time of exposure

c, the distance from the radiation source

6. Investigate the awareness of the surrounding people about electromagnetic radiation.

In order to conduct more in-depth research, we went deep into the people around us, most of whom were our relatives. In a survey, we surveyed 20 people, including 12 men and 8 women. There are 8 people who know that electromagnetic radiation is harmful to the human body. There are 7 people who know the fur, and 5 people can say that they don't know. It can be seen that most people in daily life do not understand what electromagnetic radiation is. To this end, we are more determined about our research on electromagnetic radiation.

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Seven, the feelings of the team members

We all think that understanding electromagnetic radiation is very important. The vast majority of people in the use of household appliances do not know that electromagnetic radiation is harmful to the human body. Even if you don't know what you know, you don't pay attention to it. The damage caused by electromagnetic radiation will soon show up. Therefore, we believe that the state can promote the harm of electromagnetic radiation. In this case, it should be able to attract enough attention.

Eight, difficult problems

Is the electromagnetic radiation generated by the electrical appliance the same during use?

Is there a safe distance for the use of each appliance?

Nine, references

1. "Electromagnetic Wave Propagation and Research"

2, "electromagnetic wave" Huang Hongjia

3. Principles of Electromagnetic Wave Propagation

survey

Dear Aunt Uncle:

Hello, this is our survey questionnaire. We want to know your understanding of the electromagnetic radiation in your life. Thank you for your cooperation.

1. Do you know electromagnetic radiation?

1 know 2 don't know

2. Do you know the source of electromagnetic radiation?

1 know 2 don't know

3. Have you been precautionary against the danger of electromagnetic radiation?

1 have 2 no

4. How do you prevent it?

1 not in contact with electrical appliances

2 use prevention tools

3 rubbing radiation cream

4 other methods

5, long-term contact with electrical appliances, what symptoms have you experienced?

1 have 2 no

6. Will you strictly guard against electromagnetic radiation in the future?

1 will 2 will not