Skip to main content

SETI@home

SETI stands for Search for Extraterrestrial Intelligence.

SETI@home is a scientific initiative launched by the University of California, Berkeley, with the goal of discovering radio signals from extraterrestrial intelligence.

For this purpose, a radio telescope in Puerto Rico records a portion of the electromagnetic spectrum from outer space. This data is sent to the central SETI@home server in California. There, they take advantage of the fact that the greater part of processor cycles on private and business computers remains idle. Rather than analyzing the data in a costly supercomputer, the SETI server divides the data into smaller units and sends these units to the several million computers made available by the volunteers who have registered to participate in this project. The SETI client carries out the calculations during the idle processor cycles of the participants' computers and then sends back the results.

Comments

Popular posts from this blog

Panic or panick

There is only one spelling for panic; the verb is inflected 'panic, panics, panicked, and panicking’. The form panick is used for progressive tense, past tense and past participle. We don't write panick today, though English speakers from a few hundred years ago might have (in the same way they might have written musick).

When the alternate spelling “panick” is used for the past participle: "I panicked last night at the disco." When it’s use for progressive tense: “Invariably, when markets are panicking, they sell the stocks quickly.”

It's the rule for root words ending in "c" is that you have to add “k”, so the spelling is related with the pronunciation. If we don't add the <k>, it looks as if the <c> has to be pronounced /s/. If the "k" was not there, “panicing” would look like the word which is supposed to be pronounced as if it is ended in "sing," while “paniced” would be pronounced like “panised”.

The same would …

Penny Hang

In Victorian times, many people flocked into the city, the cheap houses were badly built, cold and damp. In London, as many as forty people could have been found living in a tiny terraced house, with ten, or more, people in a single room.

Unable to find rooms, many lived in cellars, under bridges, or even in sewers. Homeless people or drunks out on the street could hire a 'penny hang'. This was a space on a thick rope. Two hooks fixed in the walls,  ropes strung in parallel from one side to another at about shoulder height. You would enter the penny hang, after paying a penny. There was no room to lie down. You hung across it. In the morning, the proprietor could come down and untie one end of the ropes, so that the clientele who had not managed to wake up and stagger out already would collapse together in a heap on the floor.

PEMDAS

"PEMDAS" - parentheses, exponents, multiplication, division, addition, subtraction, is the "order of operation" in a single math expression.