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.
Yes, cheap power supplies can also cause part of the problem, because they aren't shielded properly. Popping that only happens when turning the speakers on or off, though annoying, is common and I don't worry about it. You could also try cutting off the grounding prong/or adapting it so it goes away. The ground is often a source of feedback for speakers, an adapter would be like 99c at any hardware store.