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Yuri [45]
2 years ago
14

How did Benjamin Franklin's lifelong use of spectacles eventually lead to an invention?

Biology
1 answer:
wel2 years ago
6 0

Franklin discovered that his eyesight was getting poorer as he got older, and he raised both near-sighted and far-sighted. Tired of changing between two pairs of eyeglasses, he invented “double spectacles,” or what we now named as bifocals.

<h3>Who was Benjamin Franklin?</h3>

Benjamin Franklin was an American polymath and one of the Founding Fathers of the United States. Franklin was a leading author, printer, political theorist, politician, freemason, postmaster, scientist, inventor, humorist, civic activist, statesman, and diplomat.

As a scientist, he was a major figure in the American Enlightenment and the history of physics for his discoveries and theories regarding electricity.

As an inventor, he is known for the lightning rod, bifocals, and the Franklin stove, among other inventions. He founded many civic organizations, including the Library Company, Philadelphia's first fire department and the University of Pennsylvania.

Thus, this Could be the answer.

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What would an animal breeder use to produce chickens who lay bigger eggs
Sladkaya [172]

Answer:

Out crossing

Explanation:

By breeding a certain breed of chicken with a different kind of chicken may produce different sized eggs and avoid the possibility of inbreeding depression

4 0
3 years ago
The relationship of structure to function is one of the major themes in biology. For the following structure/function pairs, des
olganol [36]

Answer:

Membrane protein is made up of phospholipid bilayer.

Explanation:

Membrane proteins have one or more segments that are embedded in the phospholipid bilayer. This structure helps cells to maintain their shape, carry out changes triggered by chemical messengers, and transport material. Cell membrane have thousands of proteins that are embedded in the cell's lipid bilayer. The proteins present in the cell membrane is responsible for the active transport means use energy to transport molecules and ions across the cell membrane.

3 0
3 years ago
What would explain the change in the direction of air movement from daytime to night?.
tatyana61 [14]

Answer:

In the coastal areas during daytime the air above the sea region is warm and creates high pressure condition so it starts moving in direction of land where air is cooler.

Explanation:

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4 0
2 years ago
The vitreous humor is a clear, watery fluid that helps to maintain the intraocular pressure of the eye and provides nutrients fo
Arisa [49]

True, the vitreous humor is a clear, watery fluid that helps maintain the intraocular pressure of the eye and provides nutrients for the avascular lens and cornea.

Vitreous humor is also known as aqueous humor or vitreous liquid. The word vitreous means transparent, and humor means liquid. It is a clear jelly-like substance that fills the inside of the eyeball. As a person ages, the vitreous humor becomes more liquid. It plays an important role in providing metabolic nutrient requirements of the lens, coordinating eye growth and providing support to the retina.

The cornea helps our eyes to focus light so we can see clearly. It is the transparent and front part of the human eye that covers the iris, anterior chamber, and pupil, along with the anterior chamber and lens.

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5 0
2 years ago
The method for determining energy expenditure that involves the measurement of heat given off by the body during a select period
Kryger [21]

Answer:

The correct answer is direct calorimetry.

Explanation:

A method of attaining direct determination of the concentration of heat produced by the body inside an insulated chamber, which is sufficiently big to allow moderate amounts of work is termed as direct calorimetry. These chambers within which the measurement is done is also known as the whole-room calorimeters.  

The mentioned process provides the measurement of the energy discharged in the form of heat.  

3 0
3 years ago
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