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Old 03-16-2014, 10:31 AM   #1
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Old 03-16-2014, 10:58 AM   #2
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30 seconds in and my brain hurts.

edit: 3:18 in, had to shut it off.
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Old 03-16-2014, 11:04 AM   #3
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2012 version....? So this is crazier than the ant on a newspaper old 10 dimensions video?

Sent from BimmerApp mobile app
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Old 03-16-2014, 11:08 AM   #4
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30 seconds in and my brain hurts.

edit: 3:18 in, had to shut it off.
Stupiditis may be communicable. If so, you probably caught it from your sig.
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Old 03-16-2014, 11:32 AM   #5
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Stupiditis may be communicable. If so, you probably caught it from your sig.


I'm a blue collar neanderthal type. Not a free thinkin' Raleigh hipster type.
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Old 03-16-2014, 11:36 AM   #6
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Pretty interesting but too much theory for me. Crazy to think about though.
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Old 03-16-2014, 11:42 AM   #7
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Stupiditis may be communicable. If so, you probably caught it from your sig.
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Old 03-16-2014, 11:44 AM   #8
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Nice to see that's been revamped, that was such a great video when it first went up.

One thing I've become suspicious of is the value of our base 10 numerical system, it seems so arbitrary when you think about it, is there any logical merit to it beyond the fact we have 10 fingers? How would the world look different if we evaluated things in a base 6 or base 14 system? Would what seems even and logical no longer appear so, and would new patterns emerge?

Scott I'm looking at you for this one. I'm sure its crossed your mind before.
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Old 03-16-2014, 12:07 PM   #9
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The way I've always heard the reason we have base 10 is exactly because we have 10 fingers.
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Old 03-16-2014, 06:59 PM   #10
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The way I've always heard the reason we have base 10 is exactly because we have 10 fingers.
Yep.

It's not ideal though.
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Old 03-16-2014, 08:32 PM   #11
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I'm a blue collar neanderthal type. Not a free thinkin' Raleigh hipster type.
I like your collar, no matter what color it is.
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Old 03-16-2014, 09:20 PM   #12
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"this is where we get the 9th dimension and conceive it as a single point"

got it
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Old 03-16-2014, 09:52 PM   #13
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wtf did i just watch
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Old 03-16-2014, 10:04 PM   #14
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How do I play the video?
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Old 03-16-2014, 10:49 PM   #15
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How do I play the video?
funniest thing on e46f since 2010
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Old 03-16-2014, 10:53 PM   #16
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Originally Posted by k2pilot View Post
Nice to see that's been revamped, that was such a great video when it first went up.

One thing I've become suspicious of is the value of our base 10 numerical system, it seems so arbitrary when you think about it, is there any logical merit to it beyond the fact we have 10 fingers? How would the world look different if we evaluated things in a base 6 or base 14 system? Would what seems even and logical no longer appear so, and would new patterns emerge?

Scott I'm looking at you for this one. I'm sure its crossed your mind before.
I've always been under the assumption it's because we have 10 fingers too. And honestly I haven't given much thought to how things would look under a different base. But, it does remind me of a good numberphile where they map prime numbers and some cool patterns emerge even though there is no discernible order to the primes. I'll see if I can find it.
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Old 03-17-2014, 08:11 AM   #17
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Old 03-17-2014, 04:06 PM   #18
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Why is a minute divided into 60 seconds, an hour into 60 minutes, yet there are only 24 hours in a day?

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Michael A. Lombardi, a metrologist in the Time and Frequency Division at the National Institute of Standards and Technology in Boulder, Colo., takes the case.
In today's world, the most widely used numeral system is decimal (base 10), a system that probably originated because it made it easy for humans to count using their fingers. The civilizations that first divided the day into smaller parts, however, used different numeral systems, specifically duodecimal (base 12) and sexagesimal (base 60).

Thanks to documented evidence of the Egyptians' use of sundials, most historians credit them with being the first civilization to divide the day into smaller parts. The first sundials were simply stakes placed in the ground that indicated time by the length and direction of the resulting shadow. As early as 1500 B.C., the Egyptians had developed a more advanced sundial. A T-shaped bar placed in the ground, this instrument was calibrated to divide the interval between sunrise and sunset into 12 parts. This division reflected Egypt's use of the duodecimal system--the importance of the number 12 is typically attributed either to the fact that it equals the number of lunar cycles in a year or the number of finger joints on each hand (three in each of the four fingers, excluding the thumb), making it possible to count to 12 with the thumb. The next-generation sundial likely formed the first representation of what we now call the hour. Although the hours within a given day were approximately equal, their lengths varied during the year, with summer hours being much longer than winter hours.

Without artificial light, humans of this time period regarded sunlit and dark periods as two opposing realms rather than as part of the same day. Without the aid of sundials, dividing the dark interval between sunset and sunrise was more complex than dividing the sunlit period. During the era when sundials were first used, however, Egyptian astronomers also first observed a set of 36 stars that divided the circle of the heavens into equal parts. The passage of night could be marked by the appearance of 18 of these stars, three of which were assigned to each of the two twilight periods when the stars were difficult to view. The period of total darkness was marked by the remaining 12 stars, again resulting in 12 divisions of night (another nod to the duodecimal system). During the New Kingdom (1550 to 1070 B.C.), this measuring system was simplified to use a set of 24 stars, 12 of which marked the passage of the night. The clepsydra, or water clock, was also used to record time during the night, and was perhaps the most accurate timekeeping device of the ancient world. The timepiece--a specimen of which, found at the Temple of Ammon in Karnak, dated back to 1400 B.C.--was a vessel with slanted interior surfaces to allow for decreasing water pressure, inscribed with scales that marked the division of the night into 12 parts during various months.

Once both the light and dark hours were divided into 12 parts, the concept of a 24-hour day was in place. The concept of fixed-length hours, however, did not originate until the Hellenistic period, when Greek astronomers began using such a system for their theoretical calculations. Hipparchus, whose work primarily took place between 147 and 127 B.C., proposed dividing the day into 24 equinoctial hours, based on the 12 hours of daylight and 12 hours of darkness observed on equinox days. Despite this suggestion, laypeople continued to use seasonally varying hours for many centuries. (Hours of fixed length became commonplace only after mechanical clocks first appeared in Europe during the 14th century.)

Hipparchus and other Greek astronomers employed astronomical techniques that were previously developed by the Babylonians, who resided in Mesopotamia. The Babylonians made astronomical calculations in the sexagesimal (base 60) system they inherited from the Sumerians, who developed it around 2000 B.C. Although it is unknown why 60 was chosen, it is notably convenient for expressing fractions, since 60 is the smallest number divisible by the first six counting numbers as well as by 10, 12, 15, 20 and 30.

Although it is no longer used for general computation, the sexagesimal system is still used to measure angles, geographic coordinates and time. In fact, both the circular face of a clock and the sphere of a globe owe their divisions to a 4,000-year-old numeric system of the Babylonians.

The Greek astronomer Eratosthenes (who lived circa 276 to 194 B.C.) used a sexagesimal system to divide a circle into 60 parts in order to devise an early geographic system of latitude, with the horizontal lines running through well-known places on the earth at the time. A century later, Hipparchus normalized the lines of latitude, making them parallel and obedient to the earth's geometry. He also devised a system of longitude lines that encompassed 360 degrees and that ran north to south, from pole to pole. In his treatise Almagest (circa A.D. 150), Claudius Ptolemy explained and expanded on Hipparchus' work by subdividing each of the 360 degrees of latitude and longitude into smaller segments. Each degree was divided into 60 parts, each of which was again subdivided into 60 smaller parts. The first division, partes minutae primae, or first minute, became known simply as the "minute." The second segmentation, partes minutae secundae, or "second minute," became known as the second.

Minutes and seconds, however, were not used for everyday timekeeping until many centuries after the Almagest. Clock displays divided the hour into halves, thirds, quarters and sometimes even 12 parts, but never by 60. In fact, the hour was not commonly understood to be the duration of 60 minutes. It was not practical for the general public to consider minutes until the first mechanical clocks that displayed minutes appeared near the end of the 16th century. Even today, many clocks and wristwatches have a resolution of only one minute and do not display seconds.

Thanks to the ancient civilizations that defined and preserved the divisions of time, modern society still conceives of a day of 24 hours, an hour of 60 minutes and a minute of 60 seconds. Advances in the science of timekeeping, however, have changed how these units are defined. Seconds were once derived by dividing astronomical events into smaller parts, with the International System of Units (SI) at one time defining the second as a fraction of the mean solar day and later relating it to the tropical year. This changed in 1967, when the second was redefined as the duration of 9,192,631,770 energy transitions of the cesium atom. This recharacterization ushered in the era of atomic timekeeping and Coordinated Universal Time (UTC).

Interestingly, in order to keep atomic time in agreement with astronomical time, leap seconds occasionally must be added to UTC. Thus, not all minutes contain 60 seconds. A few rare minutes, occurring at a rate of about eight per decade, actually contain 61.
http://www.scientificamerican.com/ar...hours-minutes/
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Old 03-17-2014, 06:02 PM   #19
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2,000 years from the division of the day into segments, to the time those segments started be treated as fixed units.

Great post.
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Old 03-17-2014, 06:05 PM   #20
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I am not high enough to understand this.
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