• metric length
We can measure how long things are, or how tall or how far apart they are.
The meter is the basic measurement of
length in the metric system.
How far is it across this patch of grass?
http://qindex.info/i.php?x=5046
• BC 0500? Hippasus
According to Pythagoras theorem the diagonal
length of a square with each side measuring one unit would be square root of two.
The assumption that square root of two could be expressed as a ratio of two integers deduces a contradiction.
http://qindex.info/i.php?x=5026
• BC 0300? Euclid
It was the Greek mathematician Euclid who produced the first precise description of the golden section.
A
length is devided into two parts in such a way that the smaller part is to the larger part in the same proportion as the larger one is to the whole.
http://qindex.info/i.php?x=5055
• 01 Hippasus
○ According to Pythagoras theorem the diagonal
length of a square with each side measuring one unit would be square root of two.
○ The assumption that square root of two could be expressed as a ratio of two integers deduces a contradiction.
http://qindex.info/i.php?x=6563
• number
A number is a count or measurement. It is really an idea in our minds.
○ count: the total determined by counting
○ measurement: the size,
length or amount of something, as established by measuring
http://qindex.info/i.php?x=9577
• √2 ≈ 1.414
According to Pythagoras theorem the diagonal
length of a square with each side measuring one unit would be square root of two.
The assumption that square root of two could be expressed as a ratio of two integers deduces a contradiction. #math
http://qindex.info/i.php?x=9592
○○○ Golden Section ⪢⪢
○○○ rhombus ⪢⪢
