The Blog of Mathedu Academy

A content for the curious of the mathematics in the real world… and beyond, including video tutorials.

The Exponential Notation for the Floating Real Numbers

03.02.2020 Filed in: Practical Mathematics |Scientific Computing written by: Fabienne Chaplais Powers of 10

Our scientific calculators deal sometimes with numbers with a \( E \) inside: this is the so called Exponential, or Scientific Notation.

But what does that mean, and how to read such numbers?

Music and Math: how is the Major C scale built?

09.02.2020 Filed in: Practical Mathematics |Music written by: Fabienne Chaplais

The Greeks discovered the link between the musical intervals and the length of a string. The simpler example is that half the string sounds at the octave of the whole string. We know now that this corresponds to twice the frequency of the vibration.

Distance Units Conversion and Orders of Magnitude

29.01.2020 Filed in: Practical Mathematics |Physics written by: Fabienne Chaplais Metric System

The International System distance measurement unit is the meter. But in everyday life, we use many other distance measurement units. How is it possible to express any distance, whatever its order of magnitude or its usage measurement unit, in meters?

Why is zero such a big discovery?

27.01.2020 Filed in: Mathematics written by: Fabienne Chaplais

When children learn how to count, they begin with 1, as when mathematicians construct the "natural" integers set, they begin with 0.

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