Maths and Physics
Equation of the Month - The material derivative: This derivative describes the change in a property q as sensed by a particle in a fluid moving with velocity u. It has a large number of other names including: advective derivative, convective derivative, hydrodynamic derivative, Lagrangian derivative, and many more.
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Jun 10
John Clegg: The Spheromak The spheromak is a plasma configuration a bit like a smoke ring that has long confinement times Jul 8
Dave Waymont: Fields and Particles What is a particle? What does it mean for a particle to be created or destroyed? Are all electrons the same? Aug
Summer break - Back in September The schedule may change, so please check again closer to the date
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The Maths and Physics Group meets on the 2nd Wednesday of the month in the Lower Classroom at the Holy Trinity Parish Centre (which is here) from 9.30 am until 10.45 am. Most meetings consist of one of our members giving a talk on a subject of their choice, but we are open to suggestions. There is also a WhatsApp group for people to ask each other questions, or to point out interesting news articles or books they've read.
New members are very welcome. You don't need to be Einstein be a member! You just need to be interested in maths or physics (or engineering, technology, astronomy ... ). Contact [email protected] for further information.
Previous Talks
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Magnetohydrodynamics
Gauge Theories Oliver Heaviside How to multiply BIG numbers Video: Time keeping at the NPL A Discussion in the Philosophy of Science Projective Geometry The Physics of Pens and Pencils Video: On the Origin of Time The Theremin AC Circuits Leonhard Euler Discussion: Interpretations of Quantum Mechanics Video: How geometry has affected Physics Quantum Computing Concepts Behind the Black-Scholes Formula Quaternions and Octonions Telescope Construction - a personal perspective Video: Prof Chris Clarkson Dark matter, dark energy etc |
Making a telescope that can't see stars
Playing with a Stirling Engine Why do so many physicists go into financial services? Bell's Inequalities and Aspect's entanglement experiment Heat and Thermodynamics Video: Geometry of Chaos Sphere-packing in n-dimensions Experiment: Determining the wavelength of a laser Polynomials and (Aero) Planes Radio Telescopes "Welcome to the Loxodrome" (!) The Wonderful World of Non-dimensional Groups Covert Radar Detection of Stealth Planes The Steam Engine The Concept of a Field Audio Compression and MP3 Lightning! Galileo Trisecting the Angle |
Lastly, a bit of fun ...
The questions are best viewed on a desktop as they may contain pictures that cannot be scaled easily for a mobile.
Two new problems will appear next month.
The questions are best viewed on a desktop as they may contain pictures that cannot be scaled easily for a mobile.
Two new problems will appear next month.
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Easier
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Harder
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Please make all the usual assumptions, and don't worry if you can't solve the problems! Solutions can be found in this pdf.
Page maintained by Dave Waymont