Discover How Electromagnetics Is Becoming A Fundamental Part In Our Daily Life

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We caught up with Ian Macdiarmid, an expert in the field of Electromagnetics who provided an insight into the development and rapid progression of Electromagnetics, and how it has rapidly become fundamental to many aspects of our daily life...

Electric and magnetic fields arise from steady state charge or current and in the earliest days of electrical engineering, such fields were exploited in electrical machines in the form of motors, generators and other electro-mechanical components and systems.

Electromagnetic fields, which are produced by the time varying movement of charges, or in other words electric current, are the cornerstone of all radio communication systems. During the last three decades they have played an essential role in the development of a range of technologies such as wireless systems, radar systems, and medical diagnostic and treatment systems.

“Devices which intentionally exploit electromagnetic fields include your Wi-Fi router, phone and all sorts of other radio signals,” highlights Applied Electromagnetics Consultant Ian MacDiarmid. “Today, the radio spectrum is absolutely crammed with signals for data, television, radar and everything in between.

“Then there are unintentional signals. Interference, if you like, that I put under the banner of electromagnetic hazards. These include electronic systems that may be sensitive to unintentional signals or intentionally radiate signals; even from their own cables,” he explains.
When designing electrical systems, electromagnetic interference is a huge factor to consider, which is why the IET is holding a special one-day event to raise awareness and understanding of the topic.
EMT3 (Electromagnetics Tools, Tips and Techniques) provides an opportunity to learn about the fundamentals of electromagnetics in an educational, practical and fun way, with experts such as MacDiarmid sharing their knowledge through talks and demonstrations.

The History and Fundamentals of Electromagnetics

For example, MacDiarmid will be discussing the history of electromagnetics and how engineers have rapidly developed an understanding of electrical systems and electromagnetic behaviour.
“I’ll be talking about Ampère, Faraday and Maxwell; what they contributed to the mix and what the impact of their work means. I’ll also discuss the role of electromagnetics in how things behave and how these behaviours influence our lives in such a large way".
“I aim to explain why electronic systems are susceptible to electromagnetic fields and what kinds of everyday equipment can create them and interfere with these systems,” he adds.
Exciting Demonstrations

MacDiarmid will be joined at EMT3 by a number of experts, who as well as taking to the stage to speak, will hold demonstrations on everything from the effectiveness of different shielding materials through to magnetic field visualisations. Attendees will also discover the ‘shocking truth of body voltage’.
Everyday actions such as walking around generate electrostatic voltages on our bodies, which can, if high enough, lead to experiencing electrostatic shocks. My demonstration will show these body voltages as they arise – and how they can be controlled using grounding for electrostatic discharge (ESD) prevention,” highlights speaker Dr Jeremy Smallwood, Managing Director of Electrostatic Solutions.

Why You Should Attend

Electromagnetics may be a complex subject, but MacDiarmid believes that it’s important for anyone working with electrical systems to have a basic grasp of the topic.
“Both those at the start of their career and senior professionals need to be more aware,” he says. “For example, people designing and putting onto the market electrical systems need to meet regulations on how much electromagnetic field their devices emit and also make sure their systems are resilient to certain levels of electromagnetic field. It’s a very important issue now.
“I think it’s important for everyone from the project managers through to the hands-on engineers to have at least an awareness of the subject, because there’s a lot of pitfalls if you ignore it,” he notes.
Posted by Carl Resch on Sep 1, 2017 4:27 PM Europe/London

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