Physical property
A physical property is any observable or measurable characteristic of an object.

When Spock inquired as to the "the nature of" the spores that Leila Kalomi wanted to show him, she told him that "Its basic properties and elements are not important. What is important is it gives life, peace, love." ()

While investigating the means for eradicating the neural parasite that had infested Deneva, it was discovered that the key was somehow associated with the Denevan sun in 2267. Aside from  and radiation, Captain James T. Kirk brainstormed with Spock and Doctor Leonard McCoy to determine what "other qualities or properties" the sun has. Spock further established that "It exists physically. It occupies space. It has mass, therefore gravity. It converts matter to energy." Kirk finally came to the correct conclusion that "It's bright. It radiates a blinding light if you're close enough,"  due to the corresponding fact that the neural parasites lived in the shadows. ()

List of physical properties 
 Acceleration
 Absorption
 Absorption depth
 Area
 Boiling point
 Color
 Concentration
 Density
 Emission
 Flow rate
 Mass flow rate
 Length
 Malleability
 Mass
 Melting point
 Momentum
 Pressure
 Refraction index
 Spatial compression index
 Strength
 Temperature
 Viscosity

External link 
 

Physics