The Exponential Moving Average is a weighted moving average, giving more importance to near term prices. It scales data according to its newness and gives maximum weightage to recent data and minimum weightage to oldest data.By using two EMAs with different time frames we get an indicator when the fast line or signal line (lower number of time frames) crosses the slow line (higher number of time frames) A golden cross is the 50-day EMA crossing the 200-day EMA to the upside and a death cross is the opposite