The glass transition temperature ($T_g$) marks the point where an amorphous solid, like glass or amorphous ice, transitions reversibly between a hard, brittle glassy state and a more viscous, rubbery state. It is not a sharp melting point but rather a range.
For water, the glass transition temperature ($T_g$) is a widely studied property, especially concerning the formation of amorphous ice.
The accepted approximate value for the glass transition temperature of water is $-135^{\circ}\text{C}$.
This value aligns with the option provided:
This temperature is significantly lower than the freezing point of water ($0^{\circ}\text{C}$) and represents the point at which the disordered structure of liquid water becomes "frozen" into a solid, non-crystalline state without undergoing crystallization.
Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:
Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?