แสดงกระทู้
1
General Community / laser light
« เมื่อ: 16/03/23, 19:11:28 »
Lasers that we can buy online. When we press the projection, we can see the beam of light going out in a straight line. Can it be compared to a water hose? If we draw the laser as fast as we can draw If it's a stream The stream that flows out is curved. or a machine gun that fires Bullets will be visible in a curved line.UFABETบนมือถือ
