Laser pen, also known as star pen, laser pen, green pen, hand-held laser. Because of its very intuitive visible light beam, used to indicate the role of the name because of its bright beam, anti-stray light interference, and was More and more for the teaching / astronomical refers to . A number of reporters have asked me “What use are laser pointers?” Certainly there are some useful consumer applications: presentations, star gazing with others (e.g., Boy Scouts or school trips), and playing with pets.
Unwanted aiptasia polyp on a coral A mW, nanometer Wicked Laser Spyder Arctic heats it up and destroys it in 10 seconds. A video is here. The aiptasia will not grow back. The website Hackaday. Why do people buy high-powered lasers? So why do some people buy handheld lasers that are 25,or even milliwatts? One reason is that there are laser enthusiasts who enjoy experimenting with lasers. They can create homemade laser light shows, they can do experiments involving burning or engraving materials, or they may like popping balloons or popcorn kernels with light.
And you learn about light, you learn about optics. You also learn a lot of mechanical things. A homemade light show. The simple apparatus -- two motors each with a mirror attached -- is shown on the right. This is similar to car enthusiasts who like to supercharge their engines, or add racing-style spoilers and body panels.
It is also similar to computer enthusiasts who overclock their systems with water-cooling, or who make custom case modifications. None of these hobbies is "good for" anything specifically, but they also aren't harmful hobbies. In addition, there are people who simply like to see the laser beam.
A 5 mW beam is very weak. Laser fans tend to want the most visible, most powerful beam they can afford. One enthusiast pastime is shining the laser through various materials to see the beam or the resulting light pattern. A laser beam moved in a line intersects a thin plane of smoke, making beautiful swirling patterns. A powerful beam also makes it possible to see brighter laser lumia.
This is a term for the nebula-like patterns created when laser light goes through, or bounces off, a material such as textured glass or plastic. The more powerful the laser, the brighter and more detailed the lumia. Photo by laserbub from Flickr, cc by-nc 2. Finally, wanting a powerful laser may be human nature -- especially male human nature.
Laser enthusiasts are generally male; perhaps they simply want a bigger, better gadget than the guy next door. Laser hobbyists may have parallels with computer hobbyists It is possible that access to high-powered, low-cost lasers may trigger new uses for lasers.
This small and inexpensive device was taken up by hobbyists and enthusiasts at places like the legendary Homebrew Computer Club. Their first machines were underpowered and difficult to use, but they rapidly improved. It was these hobbyists who triggered the PC revolution. A possible laser pointer revolution? These small and inexpensive devices have been taken up by hobbyists and enthusiasts on Internet forums such as LaserPointerForums. Enthusiasts are developing applications and demonstrations in areas such as laser pointer microscopyinexpensive 3D scannersquantum erasureadvanced optics and photography timing sensors like this and this.
Michigan State University developed a system using a laser similar to a pointer, to detect explosive materials for the Department of Homeland Security.
Not to stretch the parallels too far, but it is interesting that some early microcomputer pioneers started with less-than-legal activities. Now on display at the Computer History Museum.
Do lasers have to have a use? However, this is not how most Western societies work. Consider jewelry, which is perhaps the female equivalent of males liking high-powered pointers. Once a person has a how to make easy crafts with duct tape ring, there's no rational reason to move up to an expensive oversized rock. Although this argument has not worked on my wife While diamonds are not intrinsically hazardous, diamond mining is definitely dangerous.
In South Africa alone, an average of 11 diamond workers per year die in the mines. Supporting wars? Exploiting children? These attributes are in the eye of the beholder. In most countries, people do not have to justify to the government why they want a legal product. Whether it is a pet rock or a carat diamond or a mW handheld laser, a person can buy it if they have the money.
It doesn't matter whether what is a laser pen used for person uses it for work, uses it for pleasure, or puts it in how to play badminton for beginners drawer after looking at it for what is cla 1000 side effects minutes.
Of course, the person must use the product responsibly. And, there are some products which are so inherently dangerous that they do have to be restricted or banned in some way. An analogy how to make a family newsletter knives and blades Consider knives and blades. These are commonplace; there are probably dozens in any American household.
Most people use them safely, but there are over 2 million U. Knives for sale to consumers in a Barcelona shop. Photo by Ryan What were the roles of women in ancient egypt from Flickr, cc by 2.
Some categories of blades are considered so dangerous that there are restrictions; for example, switchblades and working non-replica swords. Yet, despite some serious problem areas, society deems the obvious benefits of knives to outweigh the injuries and deaths caused by misuse. See this FAQ for more information comparing knife misuse with laser misuse.
Now consider consumer lasers. Millions of pointers have been sold. In general, they have a very low misuse rate -- excepting of course aviation; see below. In terms of eye injuries, there are very few cases reported and only a handful of these each year are serious or permanent. Some categories or powers of lasers are so dangerous that a consumer ban or restrictions might be justified.
My personal opinion is that most consumers what going on in chicago il this weekend not purchase handheld Class 4 lasers, which are so powerful that they can cause instant eye damage and can burn skin. Although it is interesting that as of Feb. The primary problem with a ban or restrictions is with effective enforcement. It how to love someone book difficult for them to stop illegal products from being imported or sold.
Even with increased funding -- hard to come by in a time of federal budget cuts -- it would be tricky to come up with procedures that effectively restrict consumers, without significantly impeding industrial and research laser users. For this reason, many laser safety experts do not feel that a ban or restrictions are practical at this time.
See this FAQ for more information about a ban or restrictions. Aviation: By far the most serious problem The main problem with pointers and handheld lasers, of course, is when ignorant or uncaring persons aim them at aircraft. Unfortunately, what is a laser pen used for is a serious problem requiring action. As outlined elsewhere on this websitevarious groups need to help reduce the numbers and severity of incidents.
These actions include user education, stepped up enforcement, and pilot training. If a concerted effort does not bring down the number of incidents, then it may be necessary to have a ban or restrictions on laser pointers. Before doing so, studies should be done to see if bans or restrictions have been effective in areas such as New South Wales.
Also, the legal language needs to be carefully written, to ensure it is effective without impairing legitimate uses. Total diamond mining deaths, isor A comprehensive resource for safe and responsible laser use What are laser pointers and handheld lasers good for? In a wilderness emergency, a laser pointer can be more effective than a flashlight in signaling searchers.
Pointers also have a place in the classroom, to teach light and physics properties. A December news story described how a home care nurse used laser pointers purchased at Office Depot to enable patients to communicate. The pointers are attached to eyeglass frames or a cap. They allow patients with limited mobility to point out letters and words on a communication board. In Octobera reader named Brian Palmer wrote to describe how a high-powered laser can be used to remove unwanted growths in aquariums, including aiptasia shown belowgreen star polyps, xenia, mojano, valonia and cyano.
He does note that it is necessary to take precautions to avoid laser light reflecting off the glass surfaces, including using laser safety glasses during the procedure. A discussion on Reef Central is here ; a similar discussion is at Reef2Reef.
Is it Illegal to have a Laser Pointer or Pen?
In this article, you will learn now to use PowerPoint’s built-in laser pointer (or laser pen) which comes in three different colors: red, green and blue. This laser pen feature is a built-in Microsoft PowerPoint feature (you don’t need to buy or download anything extra) that you can use to highlight things during your presentations and Estimated Reading Time: 5 mins. Jan 01, · Neatcell Picosecond Laser Pens have become one of the most trending tools these days that one can easily use for removing spots, moles, and tattoos from your skin permanently just by using laser for it. But obviously, as we know the thing that the level of competition is excellent in the marketplace, it gets tough to find the best product mainaman.coted Reading Time: 9 mins. Use the blue light laser pen to see how Blokz lenses block out harmful high energy visible (HEV) blue light. Click here to learn how to use the pen and other details/5().
There seems to be a problem serving the request at this time. A laser pen, sometimes called a laser pointer, is a small, handheld electronic device that is often powered by a battery. Used to highlight points of interest with a concentrated beam of colored light that can be projected over great distances, a laser pen is handy for training, teaching, or entertaining a pet. Whatever your budget might be, eBay has a wide range of laser pens available.
A laser pen contains a diode that emits a low-powered laser beam. In normal light conditions, this becomes visible when it hits an opaque surface. Red pointers are the simplest, using a laser-emitting diode at the lowest power.
As well as red, laser pens are also available in a wide variety of colors, including yellow and green. Laser pens and pointers can be harmful to the eyesight if misused and if used to distract people in a dangerous manner. Laser pens should never be pointed into anyone's eyes, or towards drivers or pilots. In the UK, Class 1 and Class 1M laser pens and pointers are considered safe for use by anyone and do not cause eye damage. Some laser pointers used by teachers and lecturers in conferences, and those used in barcode scanners, are Class 2 laser products.
On eBay, you can chose from a variety of laser pens. Options might include a pocket-sized laser pen that comes on a keychain, or a pen that comes in a case so it can be transported and stored securely.
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List View. Free shipping. Only 1 left! Only 2 left. Results Pagination - Page 1 1 2 3 4 5 6 7 8 9 You May Also Like. Torch Laser Pointers. Laser Pointers. Your Essential Guide to Choosing a Laser Pen A laser pen, sometimes called a laser pointer, is a small, handheld electronic device that is often powered by a battery. How does a laser pen work? Are there any safety issues with laser pen pointers? Under what circumstances can a laser pen be used?
Laser pens have a number of practical uses. These include: A small laser pen could be used to demonstrate light patterns through glass and water. Some low-power laser pens are sold as pet toys. Cats, in particular, enjoy chasing the point of light.
Many types of laser pen can make interesting presentation gifts, for example, at a business conference. Laser pens have been used by outdoor adventurers to signal distress in emergency situations. Higher power laser pens, usually those with green lasers, can be used in astronomy for pointing out objects in the night sky. Red laser pens in particular can be used to create interesting effects in long exposure photographs. What features should you look for in a laser pen?