What Are Some Examples of Blue Things?


Quick Answer

Blue stars are the hottest stars in the universe. While people often associate red with hot and blue with cold, as objects warm beyond the point of red hot, their color changes, eventually becoming blue. Other examples of blue things include blue crabs and the sky.

Continue Reading
Related Videos

Full Answer

Blue crabs have blue pinchers, and humans value them highly for their succulent, sweet meat. They grow along the eastern coast of North and South America from Nova Scotia to Uruguay. Their shells are brown, and the female blue crab has red accents on its claws. Blue crabs eat practically anything that gets in the reach of their large pinchers, including fish, mussels, snails, carrion and smaller blue crabs. The shells of male blue crabs grow to 9 inches in width.

Humans perceive the sky as blue due to the scattering of sunlight. Light travels in waves, and the molecules of air in the atmosphere act as tiny prisms to disperse the light. Blue light has the shortest wavelength in the spectrum, and the air disperses it more than any other color, giving the sky a blue appearance when the sun is overhead. However, when the angle of the sun is near the horizon, the change in the viewing angle means light must pass through more of the atmosphere. The blue light disperses quickly, allowing more of the yellow and red colors to reach the observer's eyes, giving sunrises and sunsets a red appearance.

Learn more about Colors

Related Questions

  • Q:

    What Colors Match Blue?

    A: Blue can be harmonized with the secondary colors green and purple. It can also match the tertiary colors of blue-green, often called cyan, and blue-purple,... Full Answer >
    Filed Under:
  • Q:

    What Colors Make Blue?

    A: Blue is one of the primary colors, so it cannot be created by mixing two other colors. Red and yellow are the other two primary colors. Full Answer >
    Filed Under:
  • Q:

    What Objects Are Blue?

    A: Blue is a primary color and many objects in nature have a blue color, including cobalt compounds, the flames of burning sulfur, the sky and the ocean. In 1... Full Answer >
    Filed Under:
  • Q:

    Why Is Water Blue?

    A: Water appears blue due to the way it absorbs and reflects light. Water molecules tend to absorb long-wavelength parts of the light spectrum and reflect sho... Full Answer >
    Filed Under: