Diffuse reflection - Generally, when light strikes the surface of a (non-metallic and non-glassy) solid material, it bounces off in all directions due to multiple reflections by the microscopic irregularities inside the material (e.g., the grain boundaries of a polycrystalline material, or the cell or fiber boundaries of an organic material), and by its surface, if it is rough.
The mission of The Journal of Foot & Ankle Surgery is to be the leading source for original, clinically-focused articles on the surgical and medical management of the foot and ankle. Each bi-monthly, peer-reviewed issue addresses relevant topics to the profession, such as: adult reconstruction of the forefoot; adult reconstruction of the hindfoot and ankle; diabetes; medicine/rheumatology
Fire making, fire lighting or fire craft is the process of artificially starting a fire.It requires completing the fire triangle, usually by heating tinder above its autoignition temperature.. Fire is an essential tool for human survival and the use of fire was important in early human cultural history since the Lower Paleolithic. Today, it is a key component of Scouting and bushcraft
Snow Blowers. For areas where a high annual snowfall is all but guaranteed, snow blowers are essential. These winter weather tools range in size and power, and depending on the model, they can clear everything from a light dusting of snow to a blizzard.