There are 2 causes of meningits - viruses and bacteria. Bacterial meningitis tends to be much more dangerous. Viral meningitis is referred to as aseptic meningitis and tends to be more mild. Viral meningitis usually takes 3-7 days to incubate in a person after exposure. At that point they become contagious. They usually stop being contagious after 10 days. Most meningitis is spread through saliva and mucus from the nose.
Heat travels by conduction and radiation in solids and by convection in fluids like air and water. Radiant energy waves travel from the Sun through space and become heat energy when absorbed by a substance or materialâi.e., the Earth.
RADIANT ENERGY -- Energy transferred by the exchange of electromagnetic waves from a hot or warm object to one that is cold or cooler. Direct contact with the object is not necessary for the heat transfer to occur. RADIATION -- The flow of energy across open space via electromagnetic waves such as light.