Do You Know? Country CHINA
THE TOOTHBRUSH WAS INVENTED IN 1498 IN CHINA.
Android vs Apple
15 Smartphones Can See Infrared If you shoot an infrared beam right into the camera on your phone, it will pick up a purple beam on the phone’s display. This is due to the fact that most digital camera sensors can sense light frequencies that the human eye would not be able to pick up on.
Starting one looks like shoe polish brush
ReplyDeleteYeah it's true
DeleteI use electric brush
ReplyDeleteChinese people of that tym must have teeth like animal
ReplyDelete