(September 6, 1766 – July 27, 1844)
Celebrated for his atomic theory, which ushered-in particle physics and nuclear chemistry, Dalton was among the most influential chemists of the 19th century. He debuted as a meteorologist: a profession he learned by assisting Elihu Robinson in both weather forecasting and instrument manufacturing. Although his treatise titled Meteorological Observations and Essays barely circulated, he kept faith in his studies: using what he observed to maintain weather records for nearly 60 years. Dalton also worked for a while as a math tutor. It was while on this job at New College (in Manchester) that he researched on deuteranopia (a red-green type of colorblindness which ran in his family and afflicted him and his older brother, Jonathan). His treatise, titled Extraordinary Facts relating to the Vision of Colours, with Observation, was the first scientific journal to address this genetic defect. As a result of his pioneering research, this type of colorblindness is called Daltonism. Having been fascinated by the components and behavior of matter, he experimented with gases at variable temperatures and pressures. His inferences led him to what became known as Dalton’s Law of Partial Pressures. Further experiments helped him come-up with the Law of Multiple Proportion. His experiences convinced him that chemical reactions entail the unions of microscopic particles, which he called atoms. His atomic theory that helped lay the foundations of modern chemistry was thus entrenched. Although his postulations were themselves modified, their underlying insights remained inspiring. The 60-kilometer-wide Dalton lunar crater (bordering Einstein) is named after him.
I’m a bit old-school, so I’m enjoying the historicals more than the scientific perspectives. Wonderful website I must say.
What a beautiful summary you made here. I learned about Dalton in high school and have always liked him.
I’m happy to see John Dalton here. Never will I forget how I memorized his Atomic Theory way back in High School.
I enjoyed your SAPAVIVA website and wanted you to know that.
Very good summary! Brief but rich!
Each post is classy. Thanks SAPAVIVA. An іmⲣressive website with professional touch!
First time on your blog and to this point I’m amazed by your creative analyses.
Hi, I log on to your blogs frequently but never commented. Just to let you that I appreciate all you do.
Revived, utilizing experimental evidence and work of Richter and Proust, the concept of atoms with the Dalton atomic theory. Proposed law of multiple proportions and developed ranking of atomic masses which are actually equivalent masses.
It looks nice, smells nice and tastes nice. I’ll be back to consume more. Thanks!
John Dalton was a wonderful researcher.
What an extraordinary insight he has! 🙂
At this time it looks like Movable Type is the best blogging platform available right now, from what I’ve read. Is that what you are using on your blog?
I like what you guys did on this site. Such intelligent works and reporting deserve praise!
Fine piece of writing
I found this as best site for these sort of summaries.
Good to learn more. I thought of him only as a chemist.
Great post. I’m impressed.
Like!! Thank you for publishing this awesome article.
Very good blog!
Someone in my Myspace group shared this website with us, so I came to have a look.
I’m loving the information. Outstanding blog with fantastic style and design.
Atomic Theory – enough said!
High quality posts!
Happy to come across this website
Very professional and vibrant
The Atomic Theory is the best part of his achievements.
He was a great mind indeed.
The Atomic Theory was one of my best Chemistry topics.
Nothing about Dalton ever disappointed me.
John Dalton! As great as there is!
Very clean site, regards.