Explanation

Fathometer: سمندر کی گہرائی کو جاننے والا آلہ

A fathometer is an instrument used to measure the depth of the ocean or any body of water, specifically the distance from the surface to the seabed.

It uses sound waves to calculate the depth by measuring the time it takes for the waves to return.

Galvanometer – Used to measure electric current.

Explanation

Calculating the radius of the earth over a thousand years ago required a lot of imagination.

The 10th-century Persian mathematician Abu Rayhan al-Biruni used simple trigonometric results to estimate the radius and circumference of the Earth

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Explanation

Alfred Nobel was a chemist from Sweden. 

Dynamite was invented by Alfred Nobel in the 1860s.

He is also the founder of the Nobel Prize

He also invented Nitro-glycerine in 1875.

Alfred Nobel  Born: October 21, 1833, Stockholm, Sweden

Alfred Nobel  Died: on December 10, 1896, in Sanremo, Italy

Alfred Nobel Full name: Alfred Bernhard Nobel

Additional Information

The first Noble Prize was awarded on 10th December 1901

The first Noble Prize was awarded in Stockholm, Sweden.

Explanation

The concept of vaccination was pioneered by Edward Jenner.

He is credited with developing the first smallpox vaccine.

Discovery Date: Jenner's groundbreaking work began in 1796. 

Explanation

Marconi invented Radio.

Radio was invented in 1895.

Guglielmo Marconi was an Italian inventor. 

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Explanation

Sir Isaac Newton was an English mathematician, physicist, astronomer, alchemist, theologian,

Author widely recognised as one of the greatest mathematicians

And physicists of all time and among the most influential scientists. 

Explanation

Explanation

 A biosensor is a sensor exploiting a bio-molecule 

It is used to measure the presence of a certain substance in a liquid.

Additional information:

For example,

biosensors include those used to detect viruses in the blood or measure glucose levels in the blood.

These are mainly point-of-care applications, where direct results are important.

Explanation

Thomas Alva Edison was an American inventor.

He developed many devices: 

• Electric power generation 
•  Mass communication
•  Sound recording
• Motion pictures.

Explanation

• First man who travelled in Space was Yuri Gagarin in 1961
• First man who Walk in Space was Alexei Leonov in 1965
• First man who Walk on Moon was Neil Armstrong in 1969
• Yuri Gagarin was a Soviet pilot and cosmonaut who, aboard the first successful crewed spaceflight, became the first human to journey into outer space.