👉 In physics and chemistry, noninjuriousness refers to an object that does not cause any harm or injury when it is subjected to a certain external force. In other words, a substance or material should not have the ability to produce any harmful effects on another substance or system. This concept can be applied in various fields such as engineering, materials science, and environmental sciences. It helps in designing systems that are safe for human use and environment without causing harm or injury to others.