Is Red hotter than purple?
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                            Red is a visible portion of the Electromagnetic spectrum at around having an energy range of 1.77 to 1.92 eV whereas Violet light has a higher range of 2.93 to 3.19 eV. ... Therefore Red light is hotter than Violet light.. 
                    
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                                   Purple is formed by mixing red and blue in a ratio close to 1:1, whereas violet is perceived by your eyes as containing more blue than red. ... You can have a source of monochromatic violet light (i.e. a source producing just a single wavelength), but everything that looks purple must emit both red and blue light.. 
                                
                            
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