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).
1 Make a paste. 2  Many department stores carry a cleaning product that is called Iron Out, which you can use to help remove rust stains from cotton. 3  This cleaning product usually comes in a powder form, so you will need to make a paste out of it. 4  Apply the paste to the stained area, and allow it to dry out. You can use one of two chemicals to help remove iron (rust) stains from cotton. 2  These two chemicals are called sodium thiosulfate, and potassium thiosulfate. 3  Simply add a teaspoon full of the chemical to a glass of water, and stir until it has dissolved.