In one sentence, describe what the following article is about: Model sailboats often operate with the same sophistication of design as any full-sized yacht. The more sophisticated ones are designed for racing, and the R/C sailors call them "model yachts", to distinguish their more sophisticated models from the "toy" sailboats often sold at toy stores or online. The "model yachts" sailed in competition are generally better-quality, more rugged, and more costly than "toy" sailboats. They use readily-available parts (from hobby shops), so you can repair the yachts when something goes wrong. Often, "toy" sailboats require an overseas order to get replacement parts. As with any hobby-sport, the cost of the model yacht reflects its degree of sophistication. The "model yacht" market is supplied by a number of highly qualified one-man companies as well as by a handful of larger companies. The "toy" market is generally served by larger toy companies. The long-term cost of model yachting is far less than the cost of sports fishing and golf. The start-up cost depends on the model sailors willingness and ability to build his/her own boat (from a kit or scratch), as well as the sophistication of the yacht itself. You can expect to invest as little as $450 and as much as $5,000 for a true "model yacht". After obtaining the boat and related gear, the actual cost of sailing is very low.
Summary: Learn as much as you can about the types of a model sailboat. Expect complexity. Be prepared to spend some money.

In one sentence, describe what the following article is about: You only need a few things to make a freestanding homopolar motor. You should be able to find everything you need online, or at your local hardware store. You will need the following materials to make your motor: 1 AA battery, 2-3 neodymium magnets, and several inches of copper wire. You may also need a pair of wire cutters or pliers to help you work the copper wire. Stack your magnets together to make a stand. Place the flat, or negative, side of the battery on top of the magnets. Take several inches of copper wire and bend it so that one end touches the magnet, and one end touches the positive side of the battery. You can bend your copper wire into different shapes that will spin when placed on the battery. Symmetrical shapes work best, so that the spinning doesn't throw the wire off balance. Try bending your wire into a heart shape. When you form the heart shape, bend each end of copper wire so that they fit around the magnet. The indention at the top of the heart will be the connecting point to the positive end of the battery. Take your wire and place it over the battery. As long as you have a section of wire touching the side of the magnet, and a section of wire touching the positive side of the battery, your wire should spin. The current in this homopolar motor flows in the presence of a magnetic field. When a current flows in a magnetic field, it will experience something known as the Lorentz force. The Lorentz force is what causes the wire to spin around the battery. The wire connects to the battery at three points. One point of the wire is on the positive terminal, and the two ends of the wire are near the magnet, on the negative terminal. The current flows out of the positive terminal and down both sides of the wire. The magnetic field pushes the current outwards, causing the wires to rotate.
Summary: Gather your supplies. Place the battery on the magnets. Bend your copper wire. Place the wire over the motor.

In one sentence, describe what the following article is about: iTunes comes installed on Mac computers and Windows users can download it for free from the Apple website. It's in the menu bar at the top of the screen. If you see your name at the top of the menu, you are signed in. If you're not signed in, click on Sign In... in the top section of the menu, then enter your Apple ID and password. This will open your music library. It's in the menu bar at the top of the screen. Doing so allows the display of all songs and albums that you've added to iTunes, as well as all of the music in your iCloud Music Library. It's just below the drop-down menu. This displays all of the songs in your music library, including iCloud Music Library. Use the scroll bar on the right side of the window or the directional buttons on your keyboard to do so. Click in the search field in the upper-right corner of the window and start typing the name of a song or album to quickly search for music in your library. Apple Music members can use this field to search for any available song in the Apple Music library. It's shaped like a cloud that contains a downward-pointing arrow and appears next to the song or album title. The music has now been downloaded to the iTunes library on your computer. The download button appears next to any songs or albums that are in your iCloud Music Library but not currently on your device. You don't need to download music from your iCloud Music Library in order to listen to it. You can stream any of the songs stored in your library. If you have Apple Music, you can stream any song in the Apple Music library.
Summary:
Open iTunes on your computer. Click on Account. Click on the drop-down menu in the upper-left corner of the window. Click on Music. Click on View. Click on All Music. Click on Songs. Scroll to a song that you want to download. Click the Download button.