any theories named after him?
Yes, the "Brownian Motion".
Robert Brown (botanist, born 1773)
Although Brown did not provide a theory to explain the motion the phenomenon is now known as Brownian motion.
who came up with the theory of continuous matter Albert Einstein are there any other scientists or physicists associated with the theory mentioned? Yes, Robert Brown.
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Robert Brown (botanist, born 1773) [SEP] Brownian motion
In 1827, while examining grains of pollen of the plant "Clarkia pulchella" suspended in water under a microscope, Brown observed minute particles, now known to be amyloplasts (starch organelles) and spherosomes (lipid organelles), ejected from the pollen grains, executing a continuous jittery motion. He then observed the same motion in particles of inorganic matter, enabling him to rule out the hypothesis that the effect was life-related. Although Brown did not provide a theory to explain the motion the phenomenon is now known as Brownian motion. In recent years controversy arose over whether Brown's microscopes were insufficient to reveal phenomena of this order.