Problem

Softness

Nature:

Hardness is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. Some materials (e.g. metals) are harder than others (e.g. plastics, wood). Macroscopic hardness is generally characterized by strong intermolecular bonds, but the behavior of solid materials under force is complex; therefore, there are different measurements of hardness: scratch hardness, indentation hardness, and rebound hardness.

Hardness is dependent on ductility, elastic stiffness, plasticity, strain, strength, toughness, viscoelasticity, and viscosity.

Common examples of hard matter are ceramics, concrete, certain metals, and superhard materials, which can be contrasted with soft matter.

Broader Problems:
Relative properties*complex
Narrower Problems:
Rigidity
Subject(s):
Psychology Behaviour
Related UN Sustainable Development Goals:
GOAL 3: Good Health and Well-being
Problem Type:
B: Basic universal problems
Date of last update
29.10.2019 – 21:04 CET