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Colour derives from the spectrum of light interacting with the spectral sensitivities of the eye’s light receptors. The spectrum of light is the distribution of light power versus wavelength. Colour categories are also derived from the light absorption, emission spectra, or reflection of physical objects. Colours can be defined by the degree to which they stimulate the different types of cone cells in the retina.

Chromatics is the science of colour which includes the study of: colour perception by the human eye; colour theory in artistic work; the source of colour in materials; and the physics behind light, a science that explains how gu10 led bulbs work. ‘Light’ is electromagnetic radiation which is characterized by its frequency (wavelength) and its intensity. “Visible light”, the light that humans can perceive, is possible when the wavelength is within the visible spectrum which in humans is between 390 nm and 750 nm.

Isn't it annoying that all the cool jobs are so hard to get?

I love music and have trained in media so I'd love to work in music press or music promotion, but there is just so much competition!

Everyone wants all the cool music jobs and film jobs so there's such hot competition.

I guess you just have to go out there and get as much experience as possible and do everything you can to be better than all the competition. Though you need a pretty supportive home life to be able to go on internships, take on work experience placements and work for little or no wage.

It's tough, but if it's what you want it should be worth it in the end when you (hopefully) end up with a job you love!

Photo: HALU KOBAYASHI (Flickr)

I was rolling up to Hop Farm festival a month or so ago now, and had to trundle past the boutique campsite. I always see it and think 'one day', though it does seem terribly boring, all the action happens in the main campsites at night!

But as I was walking past a guy turned away from the campsite in comical disgust, when he saw me looking at him he shouted "Fourteen hundred pounds!"

I thought there was no possible way that that was how much it cost to stay in boutique camping, but apparently so! For the full weekend Thursday to Monday morning it costs £1400.

That's £350 a night for tipi tent or wooden shack with solar power. You have to provide all your own stuff! For that price I could stay in a plush hotel with a real bed, shower, hair dryer, Bibo water dispenser and room service! What a joke!

Photo: workname (Flickr)

Starts in 24 days! The first on the UK calendar are Donington Park's Download Festival, Scotland's Rockness Festival and The Isle of Wight Festival, all over the June 10-12th weekend.

Sales of tents, gazebos, wellies, flowery women's dresses and animal onesie outfits have probably started to rise as the summer festivalites get themselves ready for an awesome summer of music.

The Isle of Wight Festival has an impressive line up this year, with headliners Kings of Leon, Foo Fighters, and Kasabian and Iggy And The Stooges, Manic Street Preachers and Seasick Steve featuring over the weekend.

American rockers Blink182 have pulled out of their European tour and appearances at T In The Park and Oxegen, but the festivals are still well-stocked with stellar live acts including Foo Fighters, Coldplay, The Strokes, Arctic Monkeys and Pulp.

What festivals are you going to this year?

Photo: Erik Hartberg (Flickr)

The ever-political, musically ferocious Rage Against The Machine.

The Los Angeles, Californian band formed in 1991 and consists of vocalist Zack de la Rocha, guitarist Tom Morello, bassist Tim Commerford and drummer Brad Wilk. Rage have been described as "fiercely polemical music, which brewed sloganeering leftist rants against corporate America, cultural imperialism, social inequality, and government oppression into a Molotov cocktail of punk, hip-hop, and thrash."

Their music is amazing, but what's so great about Rage is how much they care, and stick their neck out to talk about the issues nobody else wants to talk about. Heck they filmed "Sleep Now In The Fire" at the New York Stock Exchange and forced it to close its doors during trading hours - for the first time ever! Imagine doing that here? I'm sure Charles Stanley and Rowan Dartington and all the other stock brokerages wouldn't be able to stand in their way!

And I also award a load of awesome points for the fact that they arranged the free show in London after "Killing In The Name Of" beat the X Factor to number one!

Photo: StephenMcleod (Flickr)