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2. Splint (laboratory equipment) - Wikipedia

   en.wikipedia.org/wiki/Splint_(laboratory_equipment)

   The glowing splint test is a test for an oxidising gas, such as oxygen. [4] In this test, a splint is lit, allowed to burn for a few seconds, then blown out by mouth or by shaking. Whilst the ember at the tip is still glowing hot, the splint is introduced to the gas sample that has been trapped in a vessel. [4]

3. Projection keyboard - Wikipedia

   en.wikipedia.org/wiki/Projection_keyboard

   A projection keyboard is a form of computer input device whereby the image of a virtual keyboard is projected onto a surface: when a user touches the surface covered by an image of a key, the device records the corresponding keystroke. Some connect to Bluetooth devices, including many of the latest smartphone, tablet, and mini-PC devices with ...

4. List of keyboard switches - Wikipedia

   en.wikipedia.org/wiki/List_of_keyboard_switches

   As time goes on, there are more and more switches being developed and manufactured across the world. Some are by new manufacturers, some are collaborations between companies and manufacturers, and some are consumer made.

5. Wireless keyboard - Wikipedia

   en.wikipedia.org/wiki/Wireless_keyboard

   Wireless keyboards in the current market are commonly accompanied by a wireless mouse. Wireless keyboards based on infrared technology use light waves to transmit signals to other infrared-enabled devices. In case of radio frequency technology, a wireless keyboard communicates using signals which range from 27 MHz to up to 2.4 GHz.

6. Electronic keyboard - Wikipedia

   en.wikipedia.org/wiki/Electronic_keyboard

   Keyboard action describes the mechanism and feel of the keyboard. Keyboards can be roughly divided into non-weighted and weighted. Non-weighted keyboards have a light, springy feel to their keys, similar to the action of an organ. The least expensive keyboards, often with non-full size keys, use keys that are mounted on soft rubber pads that ...

7. Your Cholesterol Could Be A Key Indicator Of Dementia. A ...

   www.aol.com/lifestyle/cholesterol-could-key...

   Typically, dementia is associated with classic symptoms like confusion and memory loss. But new research finds that there could be a less obvious risk factor out there: your cholesterol levels ...