Two wooden dowels receive a high radiant heat flux from the panel behind them. The smaller, thinner dowel takes longer to ignite because it convectively cools while it radiatively heats, keeping its temperature below its ignition temperature.
Two wooden dowels receive a high radiant heat flux from the panel behind them. The smaller, thinner dowel takes longer to ignite because it convectively cools while it radiatively heats, keeping its temperature below its ignition temperature.