by Hivesguy. Dermatographism (also called dermatographic urticaria, or dermographism), is a skin disorder which is characterized by the skin producing a hypersensitive reaction when scratched, scraped, rubbed, or otherwise traumatized.ermographism pictures and images like the one below show how the skin forms a wheal on its surface after being stroked or rubbed with a rigid object. Notice how the letters and numbers are very distinct, which is where the term âskin writing diseaseâ getâs its name.
The ideal freezer temperature is 0 Fahrenheit (-18 Celsius) for storing food. And -10 Fahrenheit (-23 Celsius) is recommended when freezing food. For every five degrees Fahrenheit above zero, the recommended storage time is cut in half.
In practical terms, this means that most freezers are cold enough to freeze beer. The freezing point of ethanol, or drinking alcohol, is -173 degrees Fahrenheit, and the freezing point of water is 32 degrees Fahrenheit. The more alcohol a beverage has, the lower its freezing point is.