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Definition of «hardness»

Hardness refers to the ability of a material to resist deformation or penetration. It is often used as a measure of the hardness of metals, minerals and other materials through various tests such as the Rockwell test or the Mohs scale for gems. In general usage, it can also refer to something that is difficult to do or achieve, or an attribute of someone who is stubborn or uncooperative.

Usage examples

  1. The Mohs scale is used to measure the hardness of minerals, ranging from talc with a hardness of 1 to diamond with a hardness of 10.
  2. The construction industry determines the hardness of materials, such as concrete or steel, to ensure their durability and suitability for different applications.
  3. In geology, the hardness of rocks helps scientists understand their resistance to weathering and erosion.
  4. Dentists assess the hardness of tooth enamel to determine the risk of tooth decay and recommend appropriate oral care practices.
  5. The hardness of water is determined by the concentration of dissolved minerals, which can affect the efficiency of cleaning products and contribute to the formation of limescale in pipes and appliances.

Phrases with «hardness»

Sentences with «hardness»

  • Jesus told the religious leaders that god allowed laws for divorce because of hardness of heart.. (religion.blogs.cnn.com)
  • High levels of water hardness in the home may be linked to the development of eczema early in life, according to a new study led by King's College London. (sciencedaily.com)
  • The level of hardness in the water you washed the jeans or prewashed the fabric affects how much pet hair will stick to certain fabrics. (bygumbygolly.com)
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See also

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