Explanation

In 1714, Dutch scientist  Daniel Gabriel Fahrenheit invented the first reliable thermometer,

using mercury instead of alcohol and water mixtures.

In 1724, he proposed a temperature scale which now bears his name.

Galileo made his first telescope in 1609

Barometer Inventor: Evangelista Torricelli

Steam engine Inventor: Thomas Savery

Microscope Inventor: Zacharias Janssen

Explanation

Stainless steel is a alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting and also provides heat-resistant properties.

Explanation

A microphone converts sound into a small electrical current.

Sound waves hit a diaphragm that vibrates, moving a magnet near a coil.

In some designs, the coil moves within a magnet.

Other microphones, such as condenser microphones, work on the principle of capacitance.

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Explanation

Lack of insulin causes diabetes.

Diabetes is a condition that happens when your blood sugar (glucose) is too high.

It develops when your pancreas doesn't make enough insulin.

Explanation

Vector Quantities: Velocity, momentum, torque, acceleration.

Scalar Quantities: Work, distance, speed, mass.

Explanation

Trachoma is a disease of the eye

It is caused by infection with the bacterium Chlamydia trachomatis.

It is a public health problem in 38 countries and is responsible for the blindness or visual impairment of about 1.9 million people

Explanation

Goiter is caused by iodine deficiency.

It results in an enlarged thyroid gland.

Iodine deficiency can cause mental retardation in children.

Particularly if the deficiency occurs during fetal development or early childhood.

This is because iodine is essential for brain development and thyroid function.

The effects of the thyroid come from two iodine-containing hormones.

Explanation

The law of inertia is another name for Newton's first law.

'Unless an unbalanced force acts upon it, an object will remain at rest and an item in motion stays in the same direction and speed)'.

Explanation

Lithotripsy uses sound wave to breakup large kidney stones into smaller pieces.

Lithotripsy is a procedure involving the physical destruction of hardened masses

like kidney stones, bezoars or gallstones, which may be done non invasively.

The term is derived from the Greek words meaning "breaking stones".

Explanation