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Why were the scientists not able to observe most of the cell organelles before 1940?
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What scientists were making the discovery of DDT around 1940?
Paul Hermann Muller discovered the insecticide effect of DDT in 1939 but the compound is known from 1874.
When was the cytoplasm discovered?
The cytoplasm was discovered in the 1830s by two scientists, Robert Brown and Julius von Sachs. They observed the jelly-like substance inside cells that surrounds the cell's organelles.
When was astatine found?
In 1940, astatine was produced in a lab at the University of California by the three scientists named Carson, Mackenzie, and Segre. This element is classified as a semi-metal and has the atomic number of 85.
What was the main method of mapping in the US before 1940?
The main method of mapping in the US before 1940 was through the use of aerial photography, which provided detailed and accurate images of the Earth's surface from above. This method allowed cartographers to create maps with greater precision and detail compared to traditional methods like hand-drawn maps or surveys.
Greenwich ct mayor in 1940?
In 1940, the mayor of Greenwich, Connecticut was J. Walter Haynes. He served as the mayor from 1937 to 1941.
What are the release dates for Spots Before Your Eyes - 1940?
Spots Before Your Eyes - 1940 was released on: USA: 4 May 1940
What is value of Pinocchio by Carlo collodi by goldsmith prior 1940?
What is the value of pinocchio by collodi before 1940
Was a person a computer before 1940?
Before computers, people did calculations by hand.
When was Before I Hang created?
Before I Hang was created on 1940-09-17.
Who was the prime minister of Britain before 1940?
Neville Chamberlain
What is the name of a fruit that was classed as a vegetable before 1940?
Tomato, I think
What scientists were making the discovery of DDT around 1940?
Paul Hermann Muller discovered the insecticide effect of DDT in 1939 but the compound is known from 1874.
Before the 1940's all of the calculating devices were mechanial because why?
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What year was plutonium discoverd?
Plutonium was discovered in the year of 1940. It was discovered by multiple scientists: Glenn Seaborg, Edwin McMillan, Arthur Wahl, and Joseph Kennedy.
What actors and actresses appeared in Spots Before Your Eyes - 1940?
The cast of Spots Before Your Eyes - 1940 includes: Robert Blake as Kid Gertrude Short Pete Smith as Narrator Leon Tyler as Kid Emmett Vogan
Who was the prime minister before chuchill?
1940 - Neville Chamberlain 1951 - Clement Attlee
What was the main method of mapping in the US before the 1940's?
Using the stars to navigate
