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Paul Hermann Muller discovered the insecticide effect of DDT in 1939 but the compound is known from 1874.
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Position of actinides in the periodic table?
1. PRIOR TO DISCOVERY OF TRANS-URANIUM Element is before 1940): Naturally occuring heaviest elements are Th, Pa, & U. 2. FOLLOWING THE DISCOVERY OF THE TRANS-URANIUM ELEMENT : These are Np came in 1940, Pu in 1941, Am, Cm, Bk, CF, Es , Fm, Md, No & Lw
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 are the ratings and certificates for Lightning Strikes West - 1940?
Lightning Strikes West - 1940 is rated/received certificates of: USA:Approved (PCA #6081)
What was the main method of mapping in the US before 1940?
Surveying. Since 1940, aerial photography and since 1980, satellite photography have been more widely used.
What was J J Thomson's biggest contribution?
Thomson discovered the electron in the year 1897.His work put forward a new theory, that atom was made up of small particles.Thus he discovered the electrons. He proved his theory using the cathode ray tube.
What are the discovery dates for plutonium?
Plutonium was discovered in 1940 by Glenn Seaborg and alii.
What are the release dates for Ma He's Making Eyes at Me - 1940?
Ma He's Making Eyes at Me - 1940 was released on: USA: 15 March 1940 Portugal: 4 March 1942
Why is the Peking man the archaeological discovery so important?
Peking Man was an archaeological discovery found in China that is 500,000 years old. The bones were being moved in the 1940's and were somehow lost in the move.
Position of actinides in the periodic table?
1. PRIOR TO DISCOVERY OF TRANS-URANIUM Element is before 1940): Naturally occuring heaviest elements are Th, Pa, & U. 2. FOLLOWING THE DISCOVERY OF THE TRANS-URANIUM ELEMENT : These are Np came in 1940, Pu in 1941, Am, Cm, Bk, CF, Es , Fm, Md, No & Lw
Was McDonald's around in 1910?
No, it was introduced in the 1940.
Was WWE around in the 1940's?
no it wasnt
When did the Holocaust began in Europe?
Around 1940.
Why did scientists think the world was experiencing global cooling between the 1940's and 1970's?
Pollution was blocking sunlight.
What percentage of Americans smoked in the 1940's?
I have calculated around 56.76% of Americans smoking in 1940.
What was the population of New Mexico in 1940?
The population of New Mexico in 1940 was around 531,818 people.
What were various forms of energy used to heat homes around 1900-1940?
what were various forms of energy used to heat homes around 1900-1940.
When did Buddy's father buy the bakery?
Around 1940.
