Simple on/off switching, dimming or fully networked controls? Dr Jones takes a look at the range of technological options available to specifiers

To understand efficacy, you must understand lumens, watts and power factor. Don’t be afraid, the doctor will explain all…

When it comes to light measurement, not all photometers are created equal. Which one should you use if you want to improve your luminous metrology?

Lux magazine’s resident technical boffin takes the fear out of lighting technology by answering the questions you are afraid to ask

There’s no getting away from it, lighting is a technical subject. But you don’t need a physics degree to understand it all – you need the doctor. Dr Gareth Jones, that is, one of the UK’s top experts. Send your questions to thedoctor@archive.luxmagazine.co.uk. Next!