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Telescopes are instruments used for viewing objects at a distance. They can be large or handheld, and their telescoping capability allows for easier transport and use at different heights. Telescoping is also used in flagpoles, ladders, antennas, and even Tibetan temple horns.
The word telescope literally means “to see far, and telescopes are very large fixed or small handheld instruments for viewing objects at a distance. The telescope is a mechanical function named after the portable version of the telescope. It refers to the property of being built with elements that slide into each other, similar to the way a portable telescope collapses.
Besides telescopes, there are a number of devices that use the telescope for a variety of purposes. The telescope, and therefore the reduction in the size of the device, can make an instrument such as the telescope more manageable to carry when not in use. It can also be used to protect long hair extensions from strong winds, which could damage or tip them over. The telescope capability of a device could also allow it to pass through areas limited in height without requiring disassembly or risking damage, and also allows for use at different heights.
One use of the telescoping is in metal and fiberglass flagpoles, as well as other extension poles. For flagpoles the need to use rope to raise a flag is avoided, as it can be raised and lowered by lowering or lengthening the running sections. For permanent extension, sections can be fixed in place or locked to prevent slippage. You may use such posts at less than full height if desired, but draft is recommended.
A telescopic ladder offers many of the conveniences of being able to telescope. First, it can be transported more easily in confined areas, such as through doorways. Secondly, it is easy to use at different heights, without the top of the ladder extending beyond the necessary height, which can interfere with the task at hand on the ladder. A telescopic pole that can be lifted by electric power or a hand winch can be used for a WiFi hotspot, RF (radio frequency) transmission or retransmission, or surveillance.
One of the most common uses of the telescope is for antennas. Telescopic antennas are commonly a built-in feature of vehicles. Portable CB radios often come with a removable rubber duck antenna, the type of antenna that comes with the radio, so you can add a telescoping antenna for better reception and transmission in the field.
One use of the telescope that is less familiar to many is in the body of the Rag Dung – also Rag-Dung, Radhung or Rag Dung Chen – a Tibetan temple horn said to sound like an elephant’s trumpet. The Rag Dung comes in various sizes, ranging from just over 3 feet to 20 feet long (about 1 to 6m), and even the shorter ones feature sections that can be extended and locked or slid apart. in the other for portability.
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