What did Ellen Swallow Richards discover?

Swallow Richards is best known for pioneering the field of sanitary engineering. Richards performed an unprecedented survey in 1890 that led to the first state water-quality standards in the nation. She is credited for making important contributions to the understanding of environmental systems.

What discovery is Annie Jump Cannon best known for?

Known as the “census taker of the sky,” Annie Jump Cannon was a brilliant astronomer that revolutionized the way scientists classify stars. Not only did she develop the important Harvard spectral system, she also classified about 350,000 stars manually.

Who discovered the transposon?

Barbara McClintock’s
Barbara McClintock’s discovery of transposable elements in Zea mays changed the way scientists think about genetic patterns of inheritance.

What is Barbara McClintock best known for?

Barbara McClintock made discovery after discovery over the course of her long career in cytogenetics. But she is best remembered for discovering genetic transposition (“jumping genes”).

Why did Richards not receive a doctorate PHD from MIT?

She continued graduate study at MIT for two years, but was unable to obtain a doctorate in chemistry: MIT was not willing to grant its first Ph. D. in chemistry to a woman.

What is the Rumford kitchen?

Though primitive cooking ranges had been around for much of the eighteenth century. A typical Rumford arrangement consisted of a brick range, enclosing and separating a series of fires, above each of which a pot or stew-pan fitted into a circular, iron-rimmed opening.

Was Annie Jump Cannon deaf?

Annie Jump Cannon was born December 11, 1863. Cannon was a child she had a cold. The cold caused Ms. Cannon to become deaf.

What did Cecilia Payne discover that Cannon’s spectral lines really represented?

Cecilia Payne had showed for the first time how to “read” the surface temperature of any star from its spectrum. She showed that Cannon’s ordering of the stellar spectral classes was indeed a sequence of decreasing temperatures and she was able to calculate the temperatures.

Who introduced the term gene?

botanist Wilhelm Johannsen
Danish botanist Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity.

What is the origin of transposons?

Transposons were first discovered in corn (maize) during the 1940s and ’50s by American scientist Barbara McClintock, whose work won her the Nobel Prize for Physiology or Medicine in 1983. Since McClintock’s discovery, three basic types of transposons have been identified.

Is Barbara McClintock autistic?

1902-1992. Barbara McClintock was a famed scientist who made great breakthroughs in the study of chromosomes and how they change during the reproduction process. McClintock has long been thought of as autistic in some way. She had an extreme fixation on her work and was able to focus for long periods of time.

What are 3 facts about Barbara McClintock?

She was elected to the National Academy of Sciences in 1944. She was one of only two other women to have received this honor at the time. In 1945, she became first woman to be elected president of the Genetics Society of America.