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Find number abc

If a94a3 + bc698 = 8c1a1 find number abc. Multiple solutions may exist.

Correct answers: 6

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My mother says she never holds...

My mother says she never holds grudges but then will blindside you with something that happened years ago.
Last week she said, "You know, you really hurt me on your birthday."
And I was like, "Which birthday was that?"
So she replied, "The first one. You have a really big head, you know."

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Wilhelm Pfeffer

Died 31 Jan 1920 at age 74 (born 9 Mar 1845).Wilhelm (Friedrich Philipp) Pfeffer was a German botanist whose work on osmotic pressure made him a pioneer in the study of plant physiology. With Julius von Sachs, he was a leader in systematizing the fundamentals of plant physiology. In 1877, while investigating cell metabolism, he devised a semi-permeable membrane for the study osmosis. By measuring osmotic pressure, a technique he developed, Pfeffer found that pressure depends on the size of the molecules that are too large to pass through the membrane. Thus, he had a method to measure the size of such giant molecules. However, he was unable to find a mathematical relationship to predict osmotic pressure, which was furthered by the work of van't Hoff.

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