11 hours and 25 people: Conjoined twins separated
Dr. José Iglesias gave himself only a few seconds to admire his work.
Jan 27, 2023
0
2
Dr. José Iglesias gave himself only a few seconds to admire his work.
Jan 27, 2023
0
2
Fathers exposed to chemicals in plastics can affect the metabolic health of their offspring for two generations, a University of California, Riverside, mouse study reports.
Jan 26, 2023
1
42
When is a surgeon not a surgeon? It's a riddle that's long puzzled regulators and consumers. But it may soon be solved.
Jan 16, 2023
0
3
TikTok's latest cosmetic surgery trend is buccal fat removal—a procedure that removes fat padding from a person's face, in turn removing some of its roundness.
Jan 3, 2023
0
39
Historically plastic surgery has been considered one of most competitive and highly sought after residency programs. While this remains true recent appearing wrinkles may be of concern, according to an article in the January ...
Dec 31, 2022
0
24
Nearly 25% of breast cancer patients who start breast reconstruction after mastectomy don't complete the reconstructive process. The concept of reconstructive burnout is introduced and discussed in a study in the January ...
Dec 29, 2022
0
40
Between the time you read the Wi-Fi password off the café's menu board and the time you can get back to your laptop to enter it, you have to hold it in mind. If you've ever wondered how your brain does that, you are asking ...
Dec 29, 2022
0
345
For many breast cancer patients, the road to recovery may present hidden complications related to breast reconstruction following a mastectomy.
Dec 23, 2022
0
87
Learning a new task, mastering a musical instrument or being able to adapt to the constantly changing environment are all possible thanks to the brain's plasticity, or its ability to modify itself by rearranging existing ...
Dec 8, 2022
0
1058
Human beings can sometimes experience dissociative states, moments in which they feel disconnected from their body and the world around them. While these states have been linked to many psychiatric conditions, they can also ...
Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to improve performance and/or reduce costs.
The word derives from the Greek πλαστικός (plastikos) meaning fit for molding, and πλαστός (plastos) meaning molded. It refers to their malleability, or plasticity during manufacture, that allows them to be cast, pressed, or extruded into an enormous variety of shapes—such as films, fibers, plates, tubes, bottles, boxes, and much more.
The common word plastic should not be confused with the technical adjective plastic, which is applied to any material which undergoes a permanent change of shape (plastic deformation) when strained beyond a certain point. Aluminum, for instance, is plastic in this sense, but not a plastic in the common sense; while some plastics, in their finished forms, will break before deforming and therefore are not plastic in the technical sense.
There are two types of plastics: thermoplastics and thermosets. Thermoplastics, if exposed to enough heat, will melt. Thermosets will keep their shape until they are charred and burnt. Some examples of thermoplastics are grocery bags, piano keys and some automobile parts. Examples of thermosets are children's dinner sets and circuit boards.
This text uses material from Wikipedia, licensed under CC BY-SA