2. A solid has a mass of 200g in air and when partly
immersed in a certain liquid, it has a mass
of l60g. Given that the relative clensity of the liquid
is 0.80, calculate the volume of the sound immersed
in the liquid.
​

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later