In the middle between Polycarbonate is a very thin layer of a reflecting metal that may be either Steel, Gold or Alloy. Although different disks may have different metals in them due to where they may be made or type of disk.
Metal and plastic are used to make cameras along with glass/perspex reflectors.
The red ruby laser is used in standard DVD players to read standard DVD discs. They are now being superseded by the blue laser DVD player, otherwise known as Blue-Ray players and discs.
MAGNETIC
DVD-RAM and DVD-RW disks are erasable and reusable
Generally used to improve the properties of the metal. For example to make it tougher or harder. Metals that have been cold worked will have areas of built up stress, which will waken the metal. Heat treatment can be used to remove the weak areas. Which heat treament is used depends on the desired properties of the final metal. Some examples are : Annealing Normalizing Quench Hardening Case hardening
Sanding discs are power tools used for sanding plastics, woods and sometimes even metal, to make them smoother. It is made up of sandpaper on a rotating disc.
Sanding discs are power tools used for sanding plastics, woods and sometimes even metal, to make them smoother. It is made up of sandpaper on a rotating disc.
Discs of zinc and cardboard soaked in brine
Thumbtacks are typically made by stamping out small metal discs from a sheet of metal. These discs are then pressed onto a sharpened metal shaft to create the tack shape. Finally, a plastic or metal head is attached to the top of the tack for easy handling.
No, discs and rotors are not the same thing in automotive braking systems. Discs refer to the flat, circular metal components that the brake pads clamp onto to slow down the vehicle, while rotors specifically refer to the discs used in disc brake systems.
Coins are made from metal alloys that are formed to discs and then struck with a punch to mark them with their two sides, a process called "coining". The unmarked discs are called blanks and the whole process takes place in a mint.
spinnerets
You can find high-quality metal discs for jewelry making at specialized craft stores, online jewelry supply websites, or metalworking shops.
penis metal
pellet bells
Silicon is the non-metal used to make micro-chips for computers/electronics.
All satelites are made of metal.