enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Law of reciprocal proportions - Wikipedia

   en.wikipedia.org/wiki/Law_of_reciprocal_proportions

   This ratio of 1.19 obeys the law because it is a simple fraction (1/3) of 3.58. (This is because it corresponds to the formula ICl 3, which is one known compound of iodine and chlorine.) Similarly, hydrogen, carbon, and oxygen follow the law of reciprocal proportions. The acceptance of the law allowed tables of element equivalent weights to be ...

3. Tape diagram - Wikipedia

   en.wikipedia.org/wiki/Tape_diagram

   A tape diagram is a rectangular visual model resembling a piece of tape, that is used to assist with the calculation of ratios and addition, subtraction, and commonly multiplication. It is also known as a divided bar model, fraction strip, length model or strip diagram.

4. Equianalgesic - Wikipedia

   en.wikipedia.org/wiki/Equianalgesic

   An equianalgesic chart is a conversion chart that lists equivalent doses of analgesics (drugs used to relieve pain). Equianalgesic charts are used for calculation of an equivalent dose (a dose which would offer an equal amount of analgesia) between different analgesics. [1]

5. Enharmonic equivalence - Wikipedia

   en.wikipedia.org/wiki/Enharmonic_equivalence

   In Pythagorean tuning, all pitches are generated from a series of justly tuned perfect fifths, each with a frequency ratio of 3 to 2. If the first note in the series is an A ♭ , the thirteenth note in the series, G ♯ is higher than the seventh octave (1 octave = frequency ratio of 2 to 1 = 2 ; 7 octaves is 2 7 to 1 = 128 ) of the A ♭ by a ...

6. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   In 493 AD, Victorius of Aquitaine wrote a 98-column multiplication table which gave (in Roman numerals) the product of every number from 2 to 50 times and the rows were "a list of numbers starting with one thousand, descending by hundreds to one hundred, then descending by tens to ten, then by ones to one, and then the fractions down to 1/144." [6]

7. Trigonometric tables - Wikipedia

   en.wikipedia.org/wiki/Trigonometric_tables

   In mathematics, tables of trigonometric functions are useful in a number of areas. Before the existence of pocket calculators, trigonometric tables were essential for navigation, science and engineering. The calculation of mathematical tables was an important area of study, which led to the development of the first mechanical computing devices.