Questions with the keyword 'electromagnetism'

• Why are the prime colours of light red, blue and green but the prime colours of normal colours are red, blue and yellow? by sparks to Laura, Lena, Sean Comments: (No comments so far )
• How can a light photon be in two places at once? by harperstuff to Asif, Laura, Lena, Sean, Viv Comments: (No comments so far )