In other words, cheap lasers project a beam of a few millimeters when output, but can expand the diameter by 10-20 cm at 500 meters. If your laser pointer retains a few millimeters from 500 m to 1 km, then you have a certain quality. Most laser buyer ...

As others have said, the quoted power output of laser pointer manufactured overseas is usually very far. Most importantly, green lasers are usually made by irradiating infrared light on a crystal to produce green. In these settings, there is usually ...

Beams of more than 5 milliwatts start to become more and more dangerous to the eyes, and will soon reach a blinking reflection speed that is not enough to protect your eyes from exposure to light. Above 500 milliwatts, the focused beam may start to s ...

Besides, when you are not at home, who will play with your pet? This is where the cat laser pointer comes in: you can easily move it on the sofa, or find a high-tech solution that allows your camera to use your smartphone to play laser games with you ...

Visit the veterinarian regularly. She is really my best friend. When I got this breed (she was my second German Shepherd), I knew what I was doing because you have to be active with them or you will have hip and other health problems. But now because ...

The host of the party I have known for many years apologized to me and said she was too much. The party continued, and many people stared at me with embarrassment blushes... She is a 2-year-old German Shepherd, usually energetic. I think I am a good ...

"She is a German Shepherd, how dare you torture your dog!" At this point, I looked around and everyone had a WTF expression on their faces. She continued to scold me, and eventually she decided to leave the party because of "the guts of this bastard ...

My dog ​​and I were at a party, and when it was dark I took out my laser pointer. She likes laser pointer and always chases up and down. This is usually how I let her out before going to bed. Except for one girl, everyone around was surprised at ho ...

I just started researching this and discovered the "laser syndrome" in dogs. Obviously, if you use a laser pointer for games, they may be addicted to light and shadow. To the point of skipping meals/sleeping (no scientific basis and YouTube videos wi ...

If a laser pointer that is strong enough to be seen by a distant galaxy is rotated to the top on the same plane as the earth, and then turned on: will it take longer to reach the earth than without rotation? Will we see light spots, flashes or long l ...