Lasers differ in price between manufactures and quality. i have found a 100 mw laser for $16.00. But as a buyer you have to be careful, ordering any laser over 5mw to the U.S is illegal. I do not know how strictly it is enforced.
Correction to your reply: Lasers over 5mw are illegal to IMPORT to the USA. 100% legal to purchase in the US
100mw
Some can travel over 25 miles.
Laser pointers and laser pens are basically the same thing. A laser pen is a laser pointer with a pen attached.
Using lents or using electronic componets or both
yes, black ones only i think
legal just like smoking marijuana :)
Just thought I'd bump this question. An answer would be much appreciated for different strength laser pointers. For Example: 1-5MW >5 - 30MW >30 - 50MW >50 - 100MW >100 - 300MW etc. etc.
Some laser pens are not dangerous indoors. A laser pen with five mW will not harm someone and is visible enough to see. But other pens which have one hundred mW are very dangerous and are a hazard.
No they are not. The difference is the light. Laser pens will have the red shining light while the infrared pens won't have any visible light. The only way you will be able to tell if it's working (the infrared pen) is you have to test it against either a wiimote or camera lens for more information visit http://infraredpens.com/
You can buy cheap laser pointers online. Here is the reason: There are thousands and thousands of people searching the web for brighter, more powerful, and cheaper lasers of all colors every single day. The internet can pretty much take all of the credit for allowing this global industry to grow so rapidly. When you can connect laser manufacturers from China and Japan to distributors in the United States, the UK, Canada, and Australia; you can expect loads of people to get their hands on powerful laser pointers. Then you can see more choice for you on the internet! http://www.dinodirect.com/Electronics
There are several places where one can view a video review of a green laser that is 100 mW. Most of these places are video uploading sites; the most popular place to find video reviews of this nature is YouTube.
Many luxurious pens, such as fountain pens, have engravings on their outer shells. How are they made? What are the manufacturing methods? Hand-engraving, laser engraving, or CNC machining?