Circularpolarization

Polarization, also called wave polarization, is an expression of the orientation of the lines of electric flux in an electromagnetic field ( EM field ). Polarization can be constant -- that is, existing in a particular orientation at all times, or it can rotate with each wave cycle.

If my tone has been a little cheeky in this post, it’s because it’s hard to overstate just how much I use this guy. I’m constantly reaching for it while doing projects. In the span of writing this post, I blasted decades of gunk out of an old eBay VCR using my XPower. I feel like a corny TV pitchman right now, but it really is that useful.

Say hello, dear reader, to the XPower A-2S Cyber Duster. I want to tell you how much I love this little guy. I love it more than most tools in my home. I love it more than I love some of my relatives. Imagine, if you will, a tiny vacuum cleaner but in reverse. It’s a pretty straightforward concept. It has two power settings (pretty powerful and very powerful), a brush attachment, and a shorter nozzle that I can’t find right now but is probably in the cabinet where I keep all of my tools. It is an absolute game-changer.

Polarizationof light notes PDF

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I’m not trying to be a cheapskate here, but a can of compressed air costs like five bucks, and I got air at home. Like, a whole lot of it, just floating around, not paying rent. Can’t I just shove that into a can? I think you see where this bit is going.

Polarizationexamples

Polarization affects the propagation of EM fields at infrared ( IR ), visible, ultraviolet ( UV ), and even X-ray wavelength s. In ordinary visible light, there are numerous wave components at random polarization angles. When such light is passed through a special filter, the filter blocks all light except that having a certain polarization. When two polarizing filters are placed so a ray of light passes through them both, the amount of light transmitted depends on the angle of the polarizing filters with respect to each other. The most light is transmitted when the two filters are oriented so they polarize light in the same direction. The least light is transmitted when the filters are oriented at right angles to each other.

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A MAC address (media access control address) is a 12-digit hexadecimal number assigned to each device connected to the network.

I was ambiently aware of the XPower a while ago because I looked up various methods for keyboard cleaning (including this weird goo). I had seen it on the shelf at Micro Center and, like many things in that wonderful store, I thought, “Wow, that sure does sound really useful. I should buy that sometime.” Micro Center stocks two similarly priced models — this one and an almost identical-looking model, both of which are also available on Amazon — but I went with the latter because it had the word “cyber” on the box and, thus, was better. It turned out to be so good that I immediately sold several friends on it, including my friend who works at a cafe and needs to clean up coffee grounds all the damn time. They also make it in a bunch of fun colors, and the same company makes heavier-duty models specifically for pet grooming that are available through XPower and Amazon.

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Polarization is important in wireless communications systems. The physical orientation of a wireless antenna corresponds to the polarization of the radio waves received or transmitted by that antenna. Thus, a vertical antenna receives and emits vertically polarized waves, and a horizontal antenna receives or emits horizontally polarized waves. The best short-range communications is obtained when the transmitting and receiving (source and destination) antennas have the same polarization. The least efficient short-range communications usually takes place when the two antennas are at right angles (for example, one horizontal and one vertical). Over long distances, the atmosphere can cause the polarization of a radio wave to fluctuate, so the distinction between horizontal and vertical becomes less significant.

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Update January 18th, 6:52PM ET: This post has been updated with Amazon links to several products, including XPower’s A-2S Electric Duster.

Linearpolarization

Whatis polarizationin Chemistry

I am constantly surprised by the number of people who do not have an electric duster, but everyone who has converted sings their praises. Jess Weatherbed doesn’t have the XPower but has a CompuCleaner and noticed a similar improvement in basic air quality. Another person online recommended the Metrovac DataVac ESD (a duster meant specifically for data centers) since at least one of Metrovac’s models also functions as a vacuum cleaner. I have not had a chance to do extensive side-by-side testing with these models, but I would bet those things blow pretty hard, too.

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Types ofpolarization

As the name implies, it is also a duster, which does not sound as important until you realize how much dust is inside the average human home. It’s a lot, and it loves hiding in places. I have a significant dust allergy, so I am anal when it comes to air quality. For a fun time, put an N95 mask on, turn on your air purifier of choice (I have a Coway Mighty because that’s the one everyone collectively agreed to buy), and go hog wild on the hard to reach places in your room of choice. You will be shocked by the amount of revolting gunk that you will discover in your house and how much the basic air quality will improve.

Polarizationby reflection

I have always had a complicated relationship with canned compressed air. For a neat freak, it’s a vital tool. It keeps your keyboards clean, it blasts dust out of your gaming PC, and it gets gunk out of those hard to reach parts of devices. It’s an invaluable tool, an ally — heck, even a friend.

Some wireless antennas transmit and receive EM waves whose polarization rotates 360 degrees with each complete wave cycle. This type of polarization, called elliptical or circular polarization, can be either clockwise or counterclockwise. The best communications results are obtained when the transmitting and receiving antennas have the same sense of polarization (both clockwise or both counterclockwise). The worst communications usually takes place when the two antennas radiate and receive in the opposite sense (one clockwise and the other counterclockwise).

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Whatis polarizationof waves in Physics

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An electric duster is not a one-to-one replacement for compressed air. Compressed air cans come with a thin plastic straw that comes in real handy when trying to get into very hard to reach places, and that’s just really hard to replicate. But what my duster lacks in precision, it makes up for in sheer power and cost savings. You don’t have to ration your electricity the way you do canned air, so it becomes very useful for making casual, quick cleaning sweeps. At its highest setting, this thing blasts away. You can knock stuff off of your nightstand at a distance with this bad boy.

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Get an electric duster. It’ll clean your computer, it’ll clean your home, and hell, it may even clean your very soul. (Warning: individual souls may vary.)