First recorded 'cover' of The Beatles ...... plus BOOTLE: a short history (1800-1962)

Special Relativity – A Short Revision Using Space Time Diagrams

The Covariant Derivative (and Christoffel Terms)

The Cosmological Constant – A Brief Explanation

Einstein's Field Equations – A Simple Derivation

The Stress-Energy-Momentum Tensor – The Continuity Equation

Riemann & Ricci Tensors & The Curvature Scalar

Penrose Diagrams (An Introduction)

Kruskal Co-ordinates (An Introduction)

Schwarzschild Metric (Continued) - Curvature and Frames of Reference

Schwarzschild Metric (An Introduction) – Radial & Orbital Motion near a Black Hole

Hyperbolic Co-ordinates – The ‘Accelerating Frame of Reference’

Acceleration in Special Relativity

Tensors & their Transformation – An Introduction

Geodesics & Tangent Vectors - The Equation of a Geodesic

The Metric Tensor and Curved Spaces - (Transformations from one Frame to Another)

The Metric Tensor and Flat Spaces - (Differential Arc Length)

Contravariant & Covariant Components of Vectors – An Introduction to the Metric Tensor

Introduction to Riemannian Geometry - Covariant & Contravariant Vectors

Inertial and Non-Inertial Frames - The Equivalence Principle

Newtonian Gravitation – An Overview (Preparation for General Relativity)

CROSSBEATS - Songs of Praise (July 2020)

Niagara Falls 1970

Gotta Serve Somebody (Bob Dylan) - by Lindell Cooley

Queen Opens Kingsway Tunnel, Liverpool, 1971

Quantum Entanglement - Part 4 (of 12)

Physics of the Higgs Mechanism and Particle Mass - Part 4 (of 6)

Quantum Entanglement - Part 10 (of 12)

Quantum Entanglement - Part 8 (of 12)

Quantum Entanglement - Part 11 (of 12)