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.
Fire Glass usually produces more heat than gas logs. The reason being that the Fire Glass heats up and then reflects the heat back into the room, thus improving the overall heat. You get the heat coming off of the fire as well as the soothing heat from the Fire Glass rocks and or stones.The same principle goes for fire pits. By changing out old lava rock with Fire Glass, not only does the fire pit burn more efficiently but it also gives off much more heat.ire Glass usually produces more heat than gas logs. The reason being that the Fire Glass heats up and then reflects the heat back into the room, thus improving the overall heat. You get the heat coming off of the fire as well as the soothing heat from the Fire Glass rocks and or stones.