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don't know who, but it was invented in 1955.

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14y ago

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When was the diaphragm valve invented?

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Who invented the iris diaphragm?

The iris diaphragm was invented by Joseph Petzval, a Hungarian mathematician, and physicist, in the mid-19th century. Petzval's invention of the iris diaphragm revolutionized photography by allowing photographers to control the amount of light entering the camera lens, leading to better image quality and exposure control.


When did Robert Hooke invent the iris diaphragm?

Robert Hooke invented the iris diaphragm in the 17th century, specifically around the year 1665. This invention was part of his work on the microscope, which he detailed in his book "Micrographia." The iris diaphragm improved the control of light entering the microscope, enhancing the visibility of specimens.


What is the sheet of muscle located between the chest and abomen?

it is called the diaphram.


What is the human diaphragm made out of?

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What is the dome-shaped muscle that aids in breathing?

The muscle you are referring to is the diaphragm. It also separates the thoracic cavity from the abdominopelvic cavity.


Muscle separating the chest and abdomen?

the diaphragm is the muscle separating the chest and the abdomen


What is diaphragm cancer?

what is diaphragm cancer


How the diaphragm helps the lungs?

Your diaphragm contracts and expands when you breath. When the diaphragm contracts, air rushes into the lungs. When the diaphragm relaxes, air is exhaled.


Who invented Heimlich maneuver?

In 1974, Henry Heimlich first described the Heimlich maneuver (HIM'lik mah-NOO'ver), which are a series of under-the-diaphragm abdominal thrusts.For more information see:abdominal-thrusts


When you breathe in does the diaphragm do?

When you breathe in, your diaphragm contracts. This makes the diaphragm move lower and increases the area in your lungs.


What separates the thoracic from abdominal cavities?

diaphragm