Stratification is to make some material into different layers.
SILICON or common sand with doping of the right ratio to make a transistor. three layers of semiconductor material
make a newton disc .take a motor from a car which uses battery.take a circle cardboard and put it in the motor.connect the wires of the motor using a batteryyour newton disc is ready
CPUMotherboardMemory Module(s)Graphic / Video Card (if not integrated on the Motherboard or CPU)Optical Disc Drive / ODD (if you want to read CD / DVD / BD-ROM disc on your computer)Hard Disc Drive / HDDPower Supply / PSUCaseOperating System like Windows 7 or Ubuntu
A Blu-ray disc can make noise due to the spinning of the disc inside the player, which generates vibrations. These vibrations can cause the optical drive's components, such as the laser assembly and motor, to produce sounds as they engage to read the data. Additionally, any dust or debris on the disc or in the player can amplify these noises. If the noise is excessive, it may indicate a mechanical issue with the player.
A laminated beam is a beam that is made of thin layers of a material (Called lamina). An example is glulam beams, which are thin layers of wood glued together to make a large beam.
It was a joint venture between Sony and Philips.James Russel
Burn a disc means either to download data to a disc or make a copy of another disc.
the optical telescope has discovered objects on earth and in space
The answer to the question is called "glass." Glass can be melted and blown into shape to create lenses for various optical instruments.
Optical bandgap means bandgap estimated using optical means or characterization. In simple words, let a light of different energies incident on the material. The material absorbs some energies and transmits some energies (the detector measures this). The threshold energy at which the material starts absorbing light is "Optical Bandgap". In a similar manner, electrical bandgap means bandgap estimated using electrical means or characterization. Here instead of measuring what light is observed of transmitted. You make electrical contacts for the material and measure the current instead of optical absorption. The incident light is of course absorbed, and carriers (electrons and holes) are generated in proportion to absorption. We measure current (nothing but charge which is proportional to absorption) and this current too shoots up at a threshold energy i.e. electrical bandgap.
A device for reading discs on which data is stored. They use a light laser which detects bumps and dips on the surface of a disc. these bumps and dips make up binary code which is interpreted by a computer of some sort. Optical drives include CD / DVD / Blu-Ray Disc readers or writers, as well as the already obselete HD DVD players