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2. Poly(methyl methacrylate) - Wikipedia

   en.wikipedia.org/wiki/Poly(methyl_methacrylate)

   PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others . This plastic is often used in sheet form as a lightweight or shatter-resistant alternative to glass. It can also be used as a casting resin, in inks and coatings, and for many ...

3. Brass knuckles - Wikipedia

   en.wikipedia.org/wiki/Brass_knuckles

   Brass knuckles carried by Abraham Lincoln's bodyguards during his train ride through Baltimore. Ford's Theatre National Historic Site, 2007 An Apache revolver, a weapon that combines brass knuckles with a firearm and a dagger – Curtius Museum, Liège, 2011 Mark I brass knuckles trench knife Homemade brass knuckles used in a lumber camp in Pine County, Minnesota.

4. Boxer's fracture - Wikipedia

   en.wikipedia.org/wiki/Boxer's_fracture

   A boxer's fracture is the break of the fifth metacarpal bone of the hand near the knuckle. [4] Occasionally, it is used to refer to fractures of the fourth metacarpal as well. [1] Symptoms include pain and a depressed knuckle. [2] Classically, it occurs after a person hits an object with a closed fist. [3]

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Metatarsophalangeal joints - Wikipedia

   en.wikipedia.org/wiki/Metatarsophalangeal_joints

   They are analogous to the knuckles of the hand, and are consequently known as toe knuckles in common speech. They are condyloid joints , meaning that an elliptical or rounded surface (of the metatarsal bones) comes close to a shallow cavity (of the proximal phalanges).

7. 3D-printed firearm - Wikipedia

   en.wikipedia.org/wiki/3D-printed_firearm

   Although it is possible to create fully-printed plastic firearms and silencers, these tend to have short working lives. [ 2 ] 3D-printed gun culture is built around the printing of open-source firearm frames and receivers , the use of standard, metal commercial components (like an action and barrel ), and other parts that can be made or ...

8. Knucklebones - Wikipedia

   en.wikipedia.org/wiki/Knucklebones

   Plastic modern gonggi pebbles from South Korea. In China, the game is called 抓石子 zhuāshízi ("pick up pebbles"). It is played with around seven pebbles or cloth bags filled with sand or rice. The player arranges the pebbles evenly first. They throw one pebble into the air and quickly grab a pebble on the table before catching the falling ...

9. Interphalangeal joints of the hand - Wikipedia

   en.wikipedia.org/wiki/Interphalangeal_joints_of...

   Joints of the hand, X-ray Interphalangeal ligaments and phalanges. Right hand. Deep dissection. Posterior (dorsal) view. The PIP joint exhibits great lateral stability. Its transverse diameter is greater than its antero-posterior diameter and its thick collateral ligaments are tight in all positions during flexion, contrary to those in the metacarpophalangeal joint.