But the other reason is that, paradoxically, the star's extreme heat itself makes the star almost invisible. As we saw above, Planck's law of black body radiation dictates that an object's temperature determines its color. Sirius, with its surface at a temperature of 18,000 degrees F, is so hot that it glows blue.
â¢ REFLEXIVE PRONOUN (noun). The noun REFLEXIVE PRONOUN has 1 sense: 1. a personal pronoun compounded with-self to show the agent's action affects the agent. Familiarity information: REFLEXIVE PRONOUN used as a noun is very rare.
1. (Grammar) denoting a class of pronouns that refer back to the subject of a sentence or clause. 4. (Logic) logic maths (of a relation) holding between any member of its domain and itself: â¦ is a member of the same family as â¦ is reflexive.