Steve from blackpenredpen answers a real Oxford maths admissions interview question set by University of Oxford Mathematician Dr Tom Crawford. This exact question was used by Tom in the 2018 Oxford maths admissions interviews. The question looks at surfaces and volumes of revolution via a famous shape known as Gabriel’s Horn, which has a volume of pi but an infinite surface area.
This is part 1 of the interview - watch the 2nd part on the divergence of the sum of the reciprocals of the prime numbers here: https://www.youtube.com/watch?v=oi4ET0KzViI
Check out Steve’s brilliant channel blackpenredpen here: https://www.youtube.com/user/blackpenredpen
Produced by Dr Tom Crawford at the University of Oxford. Tom is an Early-Career Teaching and Outreach Fellow at St Edmund Hall: https://www.seh.ox.ac.uk/people/tom-crawford
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