exponential law

Maths in a minute: Exponential growth

What do we mean when we say that something grows exponentially?

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Compound infections

Why does the number e appear in models of exponential growth?

Loquacious maths

Food evolution

Radioactive decay and exponential laws

Arguably, the exponential function crops up more than any other when using mathematics to describe the physical world. In the second of two articles on physical phenomena which obey exponential laws, Ian Garbett discusses radioactive decay.

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Light attenuation and exponential laws

Arguably, the exponential function crops up more than any other when using mathematics to describe the physical world. In the first of two articles on physical phenomena which obey exponential laws, Ian Garbett discusses light attenuation - the way in which light decreases in intensity as it passes through a medium.

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Maths in a minute

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

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The travelling salesman

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A disappearing number

We talk about a play that explores the fascinating mathematical collaboration between the mathematicians GH Hardy and Srinivasa Ramanujan.

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