Viral meningitis: Meningitis caused by many viruses is usually contagious. However, certain viruses that are transmitted by mosquitoes are usually not spread person to person, so they are not contagious.
3] Heat transfers through the glass by conduction 4] Heat transfers from the glass to the outside air via convection. If the temperature differences are small and there are no winds or drafts, transfer of heat to/from air/glass will be by conduction.
1) When glass comes into the heating furnace, the bottom surface of the glass contact the hot ceramic rollers directly and absorb more heat than the top side, so the bottom side expands more, which causes the upward bending of the glass inside the heating furnace.