according to my discovering computers 2008 the answer is MYLAR
floppy disk
A diskette is a removable storage device that is used in a floppy disk drive. It contains a plastic rotating disk, it is inside a shell. There were 2 main varieties, the 5.25 inch floppy and the 3.5 inch floppy. The 5.25" diskette truly was floppy. The disk is soft and inside a flexible shell, and you had to take care to never bend it. The 3.25" floppy was actually hard. The platter was more rigid and it was in a hard plastic shell.
Floppy Disk
A floppy disk is made primarily of plastic and contains a magnetic disk inside, which is relatively lightweight. While it may have some buoyancy due to its design, it is not particularly water-resistant. If placed on water, a floppy disk may float for a short time, but it can quickly become waterlogged and sink. Overall, it is not designed to float effectively.
A pressure difference is created, low pressure on the inside and higher pressure on the outside (the atmospheric pressure). The atmospheric pressure crushes the plastic container, acting on the outer plastic walls.
No, it is an optical disc. A hard disk is defined as a device that stores data on spinning magnetic platters. Although a CD is 'hard' (rigid) as opposed to the flexible inside of a floppy disk, that does not classify it as a hard disk.
To read a floppy disk, you insert a floppy disk into a floppy disk drive. Not all computers have floppy disk drives. Typically desktop computers or ones that stand on the floor have floppy disk drives. New machines today allow a USB thumb drive (USB flash memory storage device) to be used in place of a floppy drive. All modern computersy have USB connections. If you need to read a floppy disk and you computer does not have a floppy disk drive, you can purchase a USB connected floppy disk drive for your computer.
Normally a floppy drive interface can be used to connect two floppy disk drives. However this may vary from system to system, some systems may also have two interfaces. It may be necessary to purchase a floppy drive cable with two connection headers.
A squeeze ball typically contains a soft, pliable material such as foam or gel inside a flexible rubber or plastic casing. This material allows the ball to be easily compressed and manipulated when squeezed.
The term 'portable disk' refers to portable memory for a computer that is in the shape of a disk, such as a CD, DVD, or floppy disk. (On a floppy disk the disk part is on the inside)
they put the magnet inside the plastic
Cytoplasm