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Magnifying glasses work because they have a curved lens which bends the light between a viewer and an object. The degree to which the light is bent, referred to as the optical power, directly affects the strength of magnification. The magnification power therefore has a direct relation to the curvature of the lens and an indirect relation to its size. If you are unsure of the strength of your magnifying glass, with a few quick measurements and calculations you can figure it out....

There are many reasons to want to find someone in prison, or to find if someone has been in prison in the past. Perhaps you are looking for a relative, or you or someone you know was a victim of a crime committed by that person. Or you may just want to check out the weird guy who just moved in across the street. Whatever your reasons are, finding a person in prison in the state of Missouri is not at all difficult....

Updated July 21, 2017 First the Wall, Then the TV Attachments Check for a VESA designation on the box or in the manual. VESA stands for Video Electronics Standards Association, and guarantees that the set will work with VESA standard mounts. Also check the back of the set for four threaded screw holes. Very early flat screens were table-top installation only. Pick the right location. The right location on the wall is where all connecting bolts or screws can be driven into studs....

The Clarion 6 Disc CD Changer is a vehicle-based CD player that houses up to six CDs at a time. The device is typically placed in the trunk of the vehicle or by the driver’s feet. If you are experiencing playback issues with the Clarion CD Changer, you need to perform a few different troubleshooting steps to correct the problem. Writer Bio

The RPC, or Remote Procedure Call virus, also referred to as the MSBLAST.EXE worm virus, gains access to your computer or network by attacking Windows vulnerabilities. The most common vulnerability attacked is the Windows DCOM RCP, in cases where users have neglected to install the security patch. Unless removed, this worm virus begins a DoS, or Denial of Service attack, which will shut down your computer and possibly your entire network....

When your Windows installation is corrupt or you wish to install the operating system without a disc, a bootable USB drive is a useful tool. A bootable USB allows users to boot Windows directly from the device. But before that can happen, you’ll need to tinker with your machine’s BIOS settings. Writer Bio

Before using a CD-RW, you must erase all the information on it and format it for your operating system. Once formated, you can save files onto the disc. CD-RW is short for rewritable compact disc, meaning that you can erase the data on it and use it again. Tips Warnings

The Compact Disc File System (CDFS) is the file formatting system used by optical disc media to designate a compact disc (CD). All CDs, whether audio, video or data, are all formatted in a type of CDFS. If you want to format that file system and remove the data on the disc, you can do so if the disc is a CD-ReWritable (CD-RW). CD-RWs are a special type of compact disc that allow you to write, erase, and rewrite content to them at will....

Certain web applications, such as avatar creators for use in forums, require you to resize JPEGs below 20 kilobytes (Kb) before uploading them to the server. This task is usually achieved in one of three ways or, in certain cases, by using a combination of the three. The first method involves reducing the size of the image. The second is to crop the image to only include a small section; the last is to change the image quality in the graphics editing software before saving the file....

Spreadsheet programs such as Excel are designed to lay out data in a logical form, run formulas and make calculations. Excel lets you not only calculate columns of data, but rows as well. Calculating data in a row is no different than calculating data in a column, and you can use the same formulas and functions to do it. Excel will update the results automatically every time you hit “Enter” or add new data into your spreadsheet....

The iTunes application is a popular program developed by Apple for the storing of media files. It also syncs media files with Apple’s iPod. If you want to transfer saved MP3 files to iTunes, you can do so with a simple drag-and-drop method. Locate the file, and quickly transfer and convert it to the M4A format so that it is compatible with iTunes.

An LG800G phone that refuses to turn on might be recoverable if you can kickstart the device and perform a hard reset. Hard resets, also known as factory resets, are a last-ditch effort method of recovering a cellular phone that’s in a non-functioning or problematic operational state. The LG800G must be turned on in order to activate the hard reset command; removing as many things that could be stopping the phone from powering on may help return the phone to a state where you can reset it....

Follow the blog to which you want to send the message. Although a Send Fan Mail link appears on the information pop-up even for blogs you don’t follow, you will receive an error message if you actually try to send fan mail to those blogs. Wait for two days. Because the system is designed to prevent spam, simply following a blog isn’t enough. If you haven’t been following the blog to which you want to send fan mail for a minimum of 48 hours, you’ll receive an error message....

If you’re concerned about your online privacy, using a virtual private network can help mask your IP address and identity from most people on the Internet. While there are many VPN programs available to Mac and Windows users, few options exist for those who use Ubuntu Linux. Nevertheless, Ubuntu offers a free download that lets you start using a VPN within a few minutes. Tips Writer Bio

When you edit your Facebook profile, your changes appears in your friends’ news feeds, earning you potentially unwanted attention. You may want your profile to say you’re single without receiving questions about your recent breakup; you may want your profile to state your religion or political party without sparking debates about your beliefs. Facebook records every change you make in your profile’s Activity Log; by removing these stories from the log, your friends will no longer see them on your timeline or elsewhere....

Hooking up an antenna to your Sony Bravia high-definition TV enables you to watch over-the-air digital-television channels through the set’s integrated digital tuner. Depending on your location, you can connect the Bravia to a set-top VHF/UHF antenna in strong signal areas or an externally-mounted antenna in areas where the digital-TV signal is weaker. After connecting the antenna for the first time, you’ll need to scan for channels to add them to the set’s electronic program guide....

Philips home theater systems are designed to hook up to a television through a number of different possible outlets. The array of choices makes the system compatible with a wide array of televisions, but it can prove confusing for those who aren’t familiar with the different types of cables involved. High definition televisions provide additional challenges because they, too, have a variety of cable options. Once you know the difference between cables, however, you can hook a Phillips home theater system to an HDTV easily....

DirecTV is one of the leading satellite companies in the United States. DirecTV provides millions of customers with satellite television every day. A basic satellite setup includes one DirecTV receiver connected to one television set but you may want to watch TV in another room also. This kind of a setup requires you to hook up a second DirecTV receiver in this location, since each television needs its own satellite receiver to broadcast satellite programming....

Air compressors provide power to other components, typically through a single motor on the compressor that converts electric energy into kinetic energy. Compressors are found in many locations, including gas stations, manufacturing plants and even in basement workshops to power staplers, sanders, drills, nail guns and more. The largest advantage to using air compressors is that tools can plug into compressors for power rather than rely on its own motor, which increases wear and tear over the life of that tool....

If you have documents saved as PDF files in different folders on your computer’s hard drive, you might want to consolidate a list of them by importing them into your iTunes library. You can also use iTunes, Apple’s free application for using media and managing your iPod, iPhone and iPad, to store and transfer PDFs to your portable device. For example, you might have a book of recipes that you want to consult while you are cooking in the kitchen....