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Gia Linh Luu

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Who is the mysterious person in the picture?
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Richard Zsigmondy

Died 23 Sep 1929 at age 64 (born 1 Apr 1865).Richard Adolf Zsigmondy was an Austro-German chemist who was awarded who was awarded the Nobel Prize for Chemistry in 1925 for “his demonstration of the heterogenous nature of colloid solutions and for the methods he used, which have since become fundamental in modern colloid chemistry."” Colloids are composed of submicroscopic particles dispersed within another substance. To conduct his research on colloids he invented the ultramicroscope (1903), with which he could view particles with a diameter of one 10-millionth of a millimetre not visible in a conventional microscope. It used an intense beam of light oriented in a position perpendicular to the microscope's optical axis. As particles scattered the incident light, their movements could be seen as flashes against a dark background.«

A local United Way office real...

A local United Way office realized that the organization had never received a donation from the town's most successful lawyer. The person in charge of contributions called him to persuade him to contribute.
"Our research shows that out of a yearly income of at least $500,000, you give not a penny to charity. Wouldn't you like to give back to the community in some way?"
The lawyer mulled this over for a moment and replied, "First, did your research also show that my mother is dying after a long illness, and has medical bills that are several times her annual income?"
Embarrassed, the United Way rep mumbled, "Um ... no."
The lawyer interrupts, "or that my brother, a disabled veteran, is blind and confined to a wheelchair?"
The stricken United Way rep began to stammer out an apology, but was interrupted again.
"Or that my sister's husband died in a traffic accident," the lawyer's voice rising in indignation, "leaving her penniless with three children?!"
The humiliated United Way rep, completely beaten, said simply, "I had no idea..."
On a roll, the lawyer cut him off once again, "So if I don't give any money to them, why should I give any to you?"
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