Avocados are high in fat. But it's monounsaturated fat, which is a good fat that helps lower bad cholesterol, as long as you eat them in moderation. Avocados have a lot of calories. The recommended serving size is smaller than youâd expect: 1/5 of a medium avocado (or 1 ounce) is 50 calories.
Why do transformers hum? Transformer noise is caused by a phenomenon which causes a piece of magnetic sheet steel to extend itself when magnetized. When the magnetization is taken away, it goes back to its original condition. This phenomenon is scientifically referred to as magnetostriction.
What's buzzing is the box on the wall. If both the chimes and transformer are in that box, I don't know which one it is. The box is loose now because I took the cover off, and the screws aren't tight into the wall. But when I first heard it buzzing, it was as tight as it's ever been.