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  2. Gamer finds indent in head from prolonged headset use after ...

    www.aol.com/gamer-finds-indent-head-prolonged...

    A Twitch streamer was left stunned after he livestreamed himself shaving his hair for charity, only to find an indent on his head from wearing his gaming headset.. The gamer, who goes by Curtoss ...

  3. Silvering - Wikipedia

    en.wikipedia.org/wiki/Silvering

    In the early 10th century, the Persian scientist al-Razi described ways of silvering and gilding in a book on alchemy, [citation needed] but this was not done for the purpose of making mirrors. Tin-coated mirrors were first made in Europe in the 15th century. The thin tinfoil used to silver mirrors was known as "tain". [5]

  4. What Dentists Want You To Know - AOL

    www.aol.com/botched-veneers-over-social-media...

    For example, if the teeth on either side of the top front teeth are too small proportionally, veneers can help even them out. Other people who can benefit from veneers are those with different ...

  5. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    Where the open-back approach has hardly any measure to block sound at the outer side of the diaphragm and the closed-back approach really has a closed chamber at the outer side of the diaphragm, a semi-open headphone can have a chamber to partially block sound while letting some sound through via openings or vents. Closed-back

  6. Sidetone - Wikipedia

    en.wikipedia.org/wiki/Sidetone

    In telephony, sidetone is the effect of sound picked up by the telephone's transmitter (mouthpiece) and instantly introduced at a low electronic signal level into the receiver (earpiece) of the same handset, a form of electrical feedback through the telephone hybrid. [1]

  7. Noise-cancelling headphones - Wikipedia

    en.wikipedia.org/wiki/Noise-cancelling_headphones

    Simplified graphical depiction of active noise reduction. To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control.A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds.

  8. Acoustic location - Wikipedia

    en.wikipedia.org/wiki/Acoustic_location

    Swedish soldiers operating an acoustic locator in 1940. Acoustic location is a method of determining the position of an object or sound source by using sound waves. Location can take place in gases (such as the atmosphere), liquids (such as water), and in solids (such as in the earth).

  9. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

    www.aol.com/products/utilities/ad-free-mail

    SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...