Friday, August 25, 2006

Oh my gosh. Last day of uni. so .

boring.

Composition class was cancelled and we only had a workshop, with one piece from the acclaimed Old Annoying German Lady (Oagl.) Oagl was bizarre and enthusiastic, and putting her in the same room as Chris whatever is probably not the best of ideas; nevertheless I'm being biased and her piece was alright. Theatrics were kinda half-half in my opinion - not enough to be worth it, but the vocal part was pretty good (maybe it was just due to performer). I only knew what the piece was about because I was in her tutorial when she wrote it last semester. Was it last semester? I don't know. I'm glad I'm not in Oagl's tutorial this semester.

Ran into Dennis. He is recording! Woot! Apparently Raymond and his fly honey were mackin it out outside Munchy mart, but i wasn't able to find them. I went into munchy mart to buy some milk...but they only had two very dodgy looking bottles left, so I left too.


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I. Want. to. Go . Home.


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DID YOU KNOW

Paper documents, envelopes, and drawing pens

Standard metric paper sizes use the square root of two and related numbers (√√√2, √√2, √2, 2, or 2√2) as factors between neighbor dimensions (Lichtenberg series, ISO 216). The √2 factor also appears between the standard pen thicknesses for technical drawings (0.13, 0.18, 0.25, 0.35, 0.50, 0.70, 1.00, 1.40, and 2.00 mm). This way, the right pen size is available to continue a drawing that has been magnified to a different standard paper size.

In computer graphics, widths and heights of raster images are preferred to be multiples of 16, as many compression algorithms (JPEG, MPEG) divide images into square blocks of that size.

The French army engineer Col. Charles Renard proposed in the 1870s a set of preferred numbers for use with the metric system. His system was adopted in 1952 as international standard ISO 3. Renard's system of preferred numbers divides the interval from 1 to 10 into 5, 10, 20, or 40 steps. The factor between two consecutive numbers in a Renard series is constant (before rounding), namely the 5th, 10th, 20th, or 40th root of 10 (1.58, 1.26, 1.12, and 1.06, respectively), which leads to a geometric sequence. This way, the maximum relative error is minimized if an arbitrary number is replaced by the nearest Renard number multiplied by the appropriate power of 10.

The most basic R5 series consists of these five rounded numbers:

  R5: 1.00        1.60        2.50        4.00        6.30

Example: If our design constraints tell us that the two screws in our gadget can be spaced anywhere between 32 mm and 55 mm apart, we make it 40 mm, because 4 is in the R5 series of preferred numbers.

Example: If you want to produce a set of nails with lengths between roughly 15 and 300 mm, then the application of the R5 series would lead to a product repertoire of 16 mm, 25 mm, 40 mm, 63 mm, 100 mm, 160 mm, and 250 mm long nails.

Yes. People actually defined this as an ISO (number 3, if you want to know.)

There are also other ISOs, some of which are:

216 - Paper size
657- Hot-rolled steel sections
838- standard for punching filing holes into paper
2171 - Cereals and milled cereal products – Determination of total ash
3103 - Method of brewing tea for the purpose of sensory tests
3864 - Safety labels
5218 - Representation of human sexes

and my favourite

10664- Hexalobular internal driving feature for bolts and screws – Torx screw head

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Practice tonight. Maybe I'll tell them.

that's not the point

Yeah, you're right. Happy holidays, everyone!

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