Page 6- THE END

THE END.

Page 5- Personal Life, Contributions, and Death

- Dalton never married or had children.
- As a Quaker, [peaceful & modest] Dalton shunned public acclaim, and refused to be nominated to be a member of the Royal Society.

- The University of Manchester established two Dalton Chemical Scholarships, two Dalton Mathematical Scholarships, and a Dalton Prize for Natural History.

- A lunar crater, and also a street in Manchester was named after Dalton. He also contributed 116 papers throughout his lifetime.

- John Dalton suffered from 3 strokes, the third in July 27 ,1844 that eventually killed him.

Page 4 - Color Blindness

the image shows the number 44, but people who have deuteroanopia, cannot see it. ------ -->

--In 1794: Dalton wrote, " Extraordinary Facts Relating to the Visions of Colors" what makes his paper so remarkable is during that time period, color blindness wasnt formally described until Dalton wrote about his own visual problem.

[ because of his research into it, color blindness is now commonly recognized as Daltonism.]

-- In 1995, the perserved eye of John Dalton showed he had the less common type of color blindness, deuteroanopia. [defect of vision in which the retina fails to respond to the color green.]

Page 3 - John Dalton's Atomic Theory

<- The first page of Dalton's " A New System of Chemical Philosophy " it shows various atoms and molecules depicted and was published in 1808.



- DALTON HAD 5 MAIN POINTS IN HIS ATOMIC THEORY-

examples of, 1. ) elements are made up of tiny particles called atoms.

2. ) all atoms of a given element are identical.

Although, centuries before Dalton, Democritus suggested the idea of atoms, but Dalton's complete formulation of a consistant theory was a breakthrough.

- He published the atomic theory in 1808, in the book A New System of Chemical Philosophy.

Page 2 - Early Life of John Dalton

-John Dalton was born into a Quaker family, and the middle child of three. [Johnathan & Mary]

- At the age of 15, John began to run a Quaker school with his brother. [for 10 years]

- In 1793: Dalton moved to Manchester, England, where he spent the rest of his life.

- Dalton's greatest influences in his life would be John Gough, a blind philosopher who intrusted John and contributed to his scientific knowledge.

- John was appointed a teacher of mathematics & natural philosophy at Manchestor College called the

" New College".

Page 1 - John

--- John Dalton was an English chemist, meteorologist and physicist.

---He is best known for his work in the developing the modern atomic theory, and his research into color blindness. [also known as Daltonism, in his honor.]