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Cutting Lasers Are Incredible Technology

Cutting lasers are lasers that are used to cut things. These lasers are used to cut things in a precise manner and it is a popular technique for use in industry. But there are several kinds of lasers. The weaker ones are used in products such as laser pointers. In order for lasers to become cutting lasers they need to be incredibly high powered. And the cutting lasers don’t cut things in the traditional sense. They are basically a very concentrated heat source. When applied to a material they burn or melt it away thus causing it to “cut” into several different pieces. But since the lasers can get directed in a precise manner, this is a more effective way to cut thing that really need to be accurate.

That is why cutting lasers are so popular in industry. Certain things really need to be as precise and accurate as possible. This is because things like electronics require as little of a margin for error as possible. This is the type of situation where lasers thrive. And even if accuracy is not as important, lasers are strong and powerful and can cut through very hard to cut materials thus giving them a cleaner cut and surface.

Learning about cutting lasers can be fascinating. There are a few places you can go for the information including the internet and in books. If you are interested in seeing cutting lasers in action find an industrial manufacturing plant that does work with these lasers and see if they can give you a tour. This is the kind of subject that would make for a great science fair project and visiting a company and watching them in action can really enhance your project or your paper.

When it comes to cutting lasers, there are two types that are the most popular. These are CO2 and Nd: YAG lasers. There are also semiconductor cutting lasers. These are the types of lasers that are powerful enough to cut through materials. If you try to cut materials with a weaker laser it just won’t work. If you are interested in cutting lasers remember that they are fascinating to learn about. And if you have a company that uses them, you know how valuable they can be. Cutting lasers are essential and make assembly lines a lot more productive. Not to mention the fact that they can be highly accurate.

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Is it possible to create a vacuum in ice?

kinda fascinated with making things of ice... and vacuums are incredibly useful - as you can use them (i think) to make things hotter or colder much faster.
thinking.. that i could use a vacuum to freeze water faster, or cut ice with a cheap simple laser to a higher precision
thoughts? suggestions? i'm definitely not up on physics.. just curious about possibilities : )

I don't really think you can use a vacuum to freeze water faster. Take a look at the phase diagram for water [1]. If you reduce the pressure, the melting point of water hardly changes, and at a certain point (about 1/100 of an atmosphere), we hit the sublimation point where solid ice directly turns into vapor without melting into water first. And if you reduce the pressure even further, the sublimation temperature reduces... making it effectively harder to make ice.

This phenomenon is common to a lot of chemicals (indeed, most pure liquids at room temperature and standard pressure I know of). Another example is making dry ice (solid carbon dioxide): you need to increase the pressure to make it.

As to whether you can create a vacuum in ice... probably not. At low pressures water vapor easily forms directly from ice. Refer back to the phase diagram, you see that to maintain a partial vacuum in ice (without substantial water vapor) requires maintaining the block of ice at extremely low temperatures (for example, to get it to 1 Pascal [roughly 7.5 millitorrs, a respectable but not spectacular vacuum]) you'd need to cool the whole thing to 200K or -73 C or -100 F )

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