The magnitude of an earthquake, usually expressed by the Richter Scale, is a measure of the amplitude of the seismic waves. The moment magnitude of an earthquake is a measure of the amount of energy released-an amount that can be estimated from seismograph readings.
Remove rust stains from virtually all surfaces you'll find in your bathroom. Restore porcelain bathtubs and sinks to their original condition, plus keep your toilet rust-free by using Iron Out Automatic Toilet Bowl Cleaner. Toilet Bowl and Water Tank Rust Stains â Use 1/2 cup (125 ml).
Natural Rust Stain Removers. Lemon juice and salt is used to remove rust stains from fabric, cloth, carpet and upholstery as well as hard surfaces. Make a paste and apply it to the stain, let it sit for 30 minutes to an hour, and then sponge or rinse it off with clean water.here are three things you can try to remove rust stains from clothing or other fabrics. The first is a combination of lemon juice and salt. Lay your clothing out flat, and pile salt over the stain. Then, pour some lemon juice onto the salt until itâs saturated.