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The oval window (or fenestra vestibuli) is a membrane-covered opening that leads from the middle ear to the vestibule of the inner ear. Vibrations that contact the tympanic membrane travel through the three ossicles and into the inner ear.

The round window is one of the two openings from the middle ear into the inner ear. It is sealed by the secondary tympanic membrane (round window membrane), which vibrates with opposite phase to vibrations entering the inner ear through the oval window.

Phosphorus exists in at least 3 allotropic forms. The three main allotropes are named for their colors: white (or yellow) phosphorus, red phosphorus, and black phosphorus. The most common and reactive of which is white (or yellow) phosphorus which looks like a waxy, transparent solid with a garlic-like odor. It is very reactive and will spontaneously inflame in air so it is stored under water.

Pyroscope – For determining the temperature of a furnace or kiln.

Crescograph – For measuring growth in plants.

Blade materials are those used to make the blade of a knife or other simple edged hand tool or weapon, such as a hatchet or sword.

The blade of a knife can be made from a variety of materials, the most common being carbon steel, stainless steel, tool steel and alloy steel. Other less-common materials used in knife blades include cobalt and titanium alloys, ceramics, obsidian, and plastic.

He discovered the principle of electromagnetism.
Formulated the Law of Electromagnetic Induction, Law of electrolysis.
Father of Modern Physics- Albert Einstein.
Father of Physics- Issac Newton.

Cerebellum
The cerebellum (Latin for ‘little brain’) has the appearance of a separate structure to the brain and is located underneath the large mass of the cerebral cortex.

Concave Mirror

A concave mirror, or converging mirror, has a reflecting surface that bulges inward.
Concave mirrors are used in reflecting telescopes, headlamps, automobile headlights, solar cookers etc.

Convex mirror

Convex mirrors are called diverging mirrors because they diverge rays of light that hit them.
Thus making the image appear closer to the mirror than the source is.

The per-hectare consumption is more Punjab (184 kg), followed by Haryana (167kg) and Andhra Pradesh (138 kg).

Scalar
Scalars only have magnitude.
Speed and distance is an example of Scalar Quantity.

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