What does a specific gravity of 780 mean?

[Arden]

Does anyone know what specific gravity is? If something has a weight of specific gravity of 780, what does that mean, do I need to take something into account before calculating?

Thank you - Arden

 

[Pyrrhus]

Read this

 

[Arden]

Thank you - Arden

 

[HallsofIvy]

Specific gravity is the density of a substance divided by the density of water.

 

[FredGarvin]

It is appropriate to always specify the reference temperature of the water (or air for gases).