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2. Tuning fork - Wikipedia

   en.wikipedia.org/wiki/Tuning_fork

   A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal (usually steel). It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out.

3. Harrow (tool) - Wikipedia

   en.wikipedia.org/wiki/Harrow_(tool)

   The disk harrow is used first to slice up the large clods left by the mould-board plough, followed by the spring-tooth harrow. To save time and fuel they may be pulled by one tractor; the disk hitched to the tractor, and the spring-tooth hitched to, and directly behind, the disk. The result is a smooth field with powdery dirt at the surface.

4. ITU-R 468 noise weighting - Wikipedia

   en.wikipedia.org/wiki/ITU-R_468_noise_weighting

   Often both A-weighted and 468-weighted figures are quoted for noise, especially in microphone specifications. While not intended for this application, the 468 curve has also been used (offset to place the 0 dB point at 2 kHz rather than 1 kHz) as "M weighting" in standards such as ISO 21727 [ 5 ] intended to gauge loudness or annoyance of ...

5. John Shore (trumpeter) - Wikipedia

   en.wikipedia.org/wiki/John_Shore_(trumpeter)

   Over time, tuning forks were adapted for use in medical and therapeutic settings, where their precise frequencies have been harnessed for healing and therapeutic purposes. [ 3 ] Tuning forks are known for their nearly pure frequency response, emitting a clear, unwavering tone that is free from the complex overtones found in other instruments.

6. Tuning forks - Wikipedia

   en.wikipedia.org/?title=Tuning_forks&redirect=no

   Pages for logged out editors learn more. Contributions; Talk; Tuning forks

7. Are Christmas trees toxic to cats? How to cat-proof your home ...

   www.aol.com/christmas-trees-toxic-cats-cat...

   No matter if you decorate immediately after Halloween or you wait until post-Thanksgiving, Christmas trees are a staple of the winter season. From balsam firs to pines and spruces to cedars, there ...

8. RFK Jr reviewing resumes for top Trump health jobs, sources say

   www.aol.com/news/rfk-jr-reviewing-resumes-top...

   NEW YORK (Reuters) -Robert F. Kennedy Jr, the former independent presidential candidate, is reviewing candidate resumes for the top jobs at the U.S. government's health agencies in Donald Trump's ...

9. Roller (agricultural tool) - Wikipedia

   en.wikipedia.org/wiki/Roller_(agricultural_tool)

   Rollers may be weighted in different ways. For many uses a heavy roller is used. These may consist of one or more cylinders made of thick steel, a thinner steel cylinder filled with concrete, or a cylinder filled with water. A water-filled roller has the advantage that the water may be drained out for lighter use or for transport.