âWhether you add some favorite butterfly plants to an existing garden or start with a new garden designed just for butterflies, you will be amazed how easy it is to attract them to your yard.â. The first thing to do is select a warm, sunny spot for the butterfly garden. âButterflies are cold-blooded and need sunshine to warm their bodies,â she explained. âLocate your garden near a wall, a fence, or even some evergreens so when they come to visit, they are not fighting a strong or chilling wind.
Comparing Materials. Glass is far inferior to paper, plastic and Styrofoam in terms of insulation. Thermal conductivity in terms of BTU/(feet - hour - degrees F) is 1.82 for glass, 0.09 for paper, 0.06 for Styrofoam.
Yet wood is opaque and blocks light completely, while glass is transparent and lets sunshine stream through unimpeded. You may have heard some people -- even some science textbooks -- try to explain this by saying that wood is a true solid and that glass is a highly viscous liquid. They then go on to argue that the atoms in glass are spread farther apart and that these gaps let light squeeze through.