IN the review of “A New View of the Origin of Dalton's Atomic Theory,” published in your issue of April 16, your reviewer, in summing up the evidence as to the origin of the atomic theory, makes an ...

__1803: __English chemist-physicist John Dalton starts using symbols to represent the atoms of different elements. Dalton, considered the father of modern atomic theory, made a logbook entry that day ...

Visual metaphors are often essential in science when you can't see what you're studying. The English chemist John Dalton, born 250 years ago, illustrated his atomic theory using wooden spheres ...