T here's no such thing as alchemyâmagically changing common chemical elements into rare and valuable onesâbut electroplating is possibly the next best thing. The idea is to use electricity to coat a relatively mundane metal, such as copper, with a thin layer of another, more precious metal, such as gold or silver.therwise, when metal atoms from the electrolyte are deposited onto it, they won't form a good bond and they may simply rub off again. Generally, cleaning is done by dipping the electrode into a strong acid or alkaline solution or by (briefly) connecting the electroplating circuit in reverse.
*ahem*. More on the birth of Baby Yao Ming, a male Masai giraffe, from the Houston Zoo's official blog : Mom Neema delivered the healthy male calf at approximately 7:10 a.m. on Monday February 25 at the McGovern Giraffe Exhibit following a 14 month pregnancy. âThe calf weighs 62 kilos, about 139 pounds and stands 74 inches tall,â said Houston Zoo Hoofed Stock Supervisor John Register. Neema is five and a half years old.
Could not subscribe, try again laterInvalid Email. It seemed like April the giraffe would never give birth but she's already proving herself to be one proud and protective mother one day after welcoming her new baby into the world. April went into labour yesterday and more than a million fans across the world rushed to watch the livestream of her giving birth on Facebook and YouTube.