We all know that it is a very cool thing to experience VR, but behind a good technology, it will be a double-edged sword. There are still many unknowns behind this technology, especially when it comes to children.
Many of the top VR sales brands also limit the age of users. For example, Oculus Rift Samsung VR Gear means that children under the age of 13 cannot use VR devices; Sony PlayStaTIon recommends that people 12 and 12 years old use the device; HTC's Vive is even more demanding, and children are prohibited from using such devices; Google is relatively simple The Cardboard also needs to be used under the supervision of an adult.
Joseph Rizzo, MD, MD, of the Manchester Eye Department, said: "The current research on VR is still insufficient. It is still unknown whether the excessive stimulation of these artificial visions will change the way the brain accepts and processes visual information. Dr. Rizzo's opinion to parents is: "Restrict the time a child can use VR, only 30 minutes at a time."
Let's take a look at the small series to see how the VR double-edged sword will affect children.
Hidden danger 1: affecting children's brain development?At present, many VR device developers have made age restrictions when the product is released, but it does not indicate why age restrictions are imposed. Does VR products really affect children's brain development? Let us listen to the opinions of experts.
MarienTIna Gotsis, director of the Center for Creative Media and Behavioral Health at the University of Southern California's School of Film and Television Arts, said: "VR may have a major impact on children's brain development because children's brains have good plasticity and may be caused by long-term adverse effects of equipment. damage.
Dr. Michael Madary, research assistant at the University of Mainz in Germany, said: "It is difficult for younger children to distinguish between reality and sci-fi. It is conceivable that after using VR, the ability to discern will be lower."
Hidden danger two: addicted! Causes vision loss?Although children have a strong learning ability in the process of growing up, their perception is slightly poor. Once they are “addicted†and immersed in the VR world, even if they feel tired or discomfort during the wearing process, there is no awareness of taking off, which is very dangerous.
The blue light of VR reflection is worthy of caution! When children experience VR videos or games, they will stare at the screen to concentrate their attention on deeper immersion, and the display will reflect a kind of "blue light". This kind of blue light also exists in televisions, computers, mobile phones, tablets and other devices. According to data released by the World Health Organization's WHO Eye Care Association, from 2006 to 2008, more than 30,000 people worldwide were blinded by blue light radiation. In short, the damage that Blu-ray can cause to the human eye cannot be repaired, so parents must pay attention to this.
Although children have many hidden dangers in using VR, they have to be sure that the benefits it brings are also a lot.
Benefit 1: New ways of communicationParents go out to work, and when they come back in the New Year, they will inevitably become children with their children. Although you will be with him later, he will not have a lot of words to tell you. One of the reasons is that there is no common topic between you and there is a generation gap. At this time, you need to take a step towards the children's world, and many parents said that they don't know how to communicate with their children. Then you can try VR equipment and enter another world. You don't need too much language communication between you. ,
Maybe use htc vive to play a VR game, complete a painting on TIlt Brush, or watch a favorite VR live broadcast on the NextVR platform.
Benefit 2: There is no “timelinessâ€There are thousands of children's toys, and children have a "fresh period" for toys. After a new toy comes out in a while, he is tired of this toy. At this time, parents need to spend a little money to buy toys. It costs money, and when the child grows up, the toy is thrown away. And spending money to buy VR equipment is not the same, it is not time-sensitive, no matter what age your child can play, the game type is downloaded through the platform, every year there will be a new game release, don't worry about children will be it Tired.
Benefit 3: New teaching methodsGoogle CEO Sundar Pichai believes: "Virtual reality can inspire students' imagination and help them understand in an immersive way how blood flows through the body or climate change affects the Great Barrier Reef and promises to put it Technology brings a million students to the UK.†And he said that he has received feedback from thousands of British teachers that VR teaching can improve students' literacy and writing skills and inject new ways into traditional teaching methods. blood.
On September 21st, Beijing Dongcheng District Peixin Primary School teamed up with Microvision Cool Technology Co., Ltd. to officially launch the “VR Classroom†of Peixin Primary School. Pei Xin Primary School has thus become the “Basic Education VR Teaching Model Schoolâ€. President Zhang Yan said that the school plays a role in opening a platform for future education for children. Regarding whether VR will replace the teacher, the principal thinks: "The advanced technology will not replace the role of the teacher. The good technology is the real service for the education under the teacher's application. The "VR class that can really go to class" is the school. needs.
In short, Xiao Bian believes that under the supervision of parents, children use VR equipment is no problem. There are no people who have no shortcomings in life. The products are the same. There are advantages. There are definitely shortcomings. If you don’t have it, you haven’t found it yet. Moreover, TV and mobile phones have radiation. You know that it will affect your vision. You don’t look at it every day. ?
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The gear reducer is used to provide low speed and large torque.
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Operating temperature range:
12v Dc geared motors should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a geared motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
12v Dc geared motors should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of 12v Dc geared motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
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