• Question: What are tears

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      • Royal Society of Chemistry: Find out more about:
      Asked by Tom to Alex, Anaïs, Peter, Sarwat, Shreesha on 6 Mar 2015.
      • Photo: Sarwat Iqbal

        Sarwat Iqbal answered on 6 Mar 2015:

        I am not sure if you are asking about tear composition or how do they form?
        The composition varies from tear types. Mainly, tears are composed of water, and salts. Tears formed from crying are linked with strong internal emotions, such as sorrow, emotion, or pleasure. Laughing or yawning may also lead to the production of tears. Tear secretion helps to clean and lubricate the eyes in response to an irritation of the eyes.

      • Photo: Peter Maskell

        Peter Maskell answered on 9 Mar 2015:

        See Sarwat. However as for what purpose crying serves who knows? I don’t (and i’m not sure anyone else does)

      • Photo: Shreesha Bhat

        Shreesha Bhat answered on 13 Mar 2015:

        very well explained by Sarwat

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