It expands due to the fact the mercury reacts to heat in such a way that makes it rise up the tube.
I don’t know the answer but pls do not click the link the other person sent!! it is a scam
Resident Johnson's Great Society sought to address many issues in society in the US, but one of the most important was the issue of poverty and inequality in social mobility.
Used to say that it is good and acceptable to not obey a rule. It also applies to symbolism.
A) people lost their jobs because of new technology. If anything people would gain jobs more than they would lose them because of a technology that technically talks to you. It just makes no sense to lose your job because of a radio.
