Evolution of human colour vision lights, which appear to be clear. Other colour perception issues include having trouble distinguishing yellows from reds and violet, lavender and purple from blue. In other cases, objects that reflect both red and blue light may appear to just be blue to these individuals. Deuteranopes, who are missing medium wavelength sensitive cones, are similar to protanopes in that they cannot distinguish between colours in the green-yellow-red part of the electromagnetic spectrum. However, deuteranopes do not suffer from dimming issues. For example, purple colors are not seen as being opposite to other colours in the spectrum but instead appear to be
Faculty of Political Science, Chulalongkorn University Centre (TPRC). The Faculty has also run a prominent academic journal namely Journal of Social Science for over 35 years. The published articles are both written in Thai and English. The black singha is used as a symbol of the dedicated leader. The black colour symbolises the colour of the neck of Shiva who drinks the poison churned up from the world ocean (Halahala) to protect and save all creatures. (In fact, the actual colour of Shiva's neck in Hindu mythology is deeply dark blue or "nila". That's why one of his names is Nilakantha or "having a blue-coloured neck".