Color The science of color is sometimes called chromatics, colorimetry, or simply color science. It includes the study of the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what is commonly referred to simply as "light"). Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity. When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light". Most light
Media and LGBTQ youth of colour in the United States Media and LGBTQ youth of colour in the United States In the United States, LGBTQ youth of colour are marginalized adolescents in the LGBTQ community. Social issues include homelessness; cyberbullying; physical, verbal and sexual abuse; suicide; drug addiction; street violence; immigration surveillance; engagement in high-risk sexual activity; self-harm, and depression. The rights of LGBTQ youth of colour are reportedly not addressed in discussions of sexuality and race in the larger context of LGBTQ rights. Specific issues primarily stem from the framework of intersectionality. LGBTQ youth of colour may experience sexism, homophobia, transphobia, racism, heterosexism, white supremacy or poverty, sometimes simultaneously.