Table of Contents

## What are the achievements of James Clerk Maxwell?

- Maxwell is best known for his research in electromagnetic radiation, which unites the sciences of electricity, magnetism and optics.
- In 1856, aged 25, Maxwell began work on another field of research – the composition of the rings of Saturn.

### What is the significant contributions of James Clerk Maxwell in the development of electromagnetic wave theory?

Maxwell and Hertz. About 150 years ago, James Clerk Maxwell, an English scientist, developed a scientific theory to explain electromagnetic waves. He noticed that electrical fields and magnetic fields can couple together to form electromagnetic waves.

**What are the two Maxwell’s equations for magnetostatic fields?**

Generally, the magnetic field in the presence of a current density J is given by Maxwell’s equation (2): ∇ × H = J.

**What is the triangle in Maxwell’s equations?**

The triangle and dot symbol in front of the field symbols (called the “divergence” operator) is a mathematical way to measure if a field behaves as a source or a sink at a specific point in space.

## What is an upside-down triangle in physics?

Partial derivative operator, nabla, upside-down triangle, is a symbol for taking the gradient, which was explained in the video. Sidenote: (Sometimes the word “operator” is interchangeable with “operation”, but you see this all the time.

### What is the triangle called in physics?

In general physics, delta-v is a change in velocity. The Greek uppercase letter Δ (delta) is the standard mathematical symbol to represent change in some quantity.

**What is the Greek symbol for change?**

Delta

**What is the medical symbol for change?**

List of medical abbreviations: 0–9

Abbreviation | Meaning |
---|---|

Δ | diagnosis; change |

ΔΔ | differential diagnosis (the list of possible diagnoses, and the effort to narrow that list) |

+ve | positive (as in the result of a test) |

# | fracture |