Why does steel glow when it’s hot?

Why does steel glow when it’s hot?Hot steel glows red when hot because its atoms vibrate with a lot of energy. The amount of energy varies in atoms resulting in a range of colours.

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World Lupus Day: Date, History, Significance, Facts about autoimmune disease

World Lupus Day: Date, History, Significance, Facts about autoimmune disease

World Lupus Day is dedicated to people worldwide who suffer from this debilitating autoimmune disease …