The three groups failed to succeed in a group of failures The principle is that light energy is converted into heat energy In a video spread online, a man puts a cell phone on a balloon, opens a flash and presses the shutter, clicks a few seconds, and the balloon exploded instantaneously. This article is a picture of the public number of the Jiangsu news WeChat In order to verify the authenticity of the video, Jiangsu radio and television media news center specifically combined with journalists from Zhenjiang, Suzhou, Suqian and other places, each bought a balloon from the local and conducted experiments. Four reporters took photos of the balloons with the flash of their mobile phones. The result was that three people exploded the balloon, but only one did not succeed. Experimental process Xu Jing, an associate professor of physics at Jiangsu University, told reporters that the flash of a mobile phone instantly exploded the balloon, which in fact played the role of converting light energy into heat. If the flash is kept at a distance from the balloon, or the quality of the balloon is better, the balloon may be intact. Xu Jing, associate professor of physics in the school of physics, Jiangsu University: when the cell phone is attached to the rubber surface, the light source is focused on the rubber surface, the rubber surface produces weak heat, and the rubber is penetrated, causing the balloon to explode. Does it hurt your eyes by taking a photo with a flash? Experts: improper use can affect vision Can balloons be flashed by flashing lights and directly related to distance? Will flash do harm to human eyes? Can you still take pictures happily? Data map Experts say that flash, bathing lamp, welding light, laser pen, strong sun and so on are all strong light. In life, attention should be paid to avoid eye contact with these strong light. In addition, ophthalmologists also remind, a lot of people like to play mobile phones before bedtime, must pay attention to adjusting the brightness of the mobile phone screen, the best to open the room lights, avoid too strong contrast sensitivity, the human retina of the photosensitive cells cause damage. Yang Jie, deputy director of Ophthalmology of a hospital in Zhenjiang: if the screen of the mobile phone is too bright, we will see the mobile phone very clear, but after a long time, because the contrast sensitivity is too large, it is easy to cause fatigue and blurred vision. Therefore, properly dimming the screens light and improving the illuminance of the surrounding environment are relatively protective for the eyes. Remind everyone: we must protect our eyes! This article is from Jiangsu news editor: Huang Zhecheng _B9302 Yang Jie, deputy director of Ophthalmology of a hospital in Zhenjiang City: If the screen of the mobile phone is too bright, we can see the mobile phone very clear, but after a long time, because of the contrast sensitivity, it is easy to cause fatigue and blurred vision. Therefore, properly dimming the screens light and improving the illuminance of the surrounding environment are relatively protective for the eyes. Remind everyone: be sure to protect your eyes!