Most of the fuel on-board a rocket is used in the first few minutes of the mission to achieve an escape velocity of at least 25,000 mph (7 miles per second or 40,000 km/h)âthe speed a rocket must theoretically attain to escape Earth's gravity.
Traditionally Japanese green teas and spring teas are brewed at lower temperatures (160Â°F to 170Â°F) and standard Chinese green teas at higher temperatures (170Â°F to 180Â°F). Pre-warm the teapot or cup (optional): Pour a small amount of boiling water into the pot or cup. When the pot or cup is warm, pour out the water.
The temperature used for brewing tea depends on the type of tea, but may range from 75Â°C for white teas, to 80Â°C for green tea, to 90Â°C for Oolong teas and full boiling temperature for black teas. Hot tea is normally drinkable at between 60Â°C and 65Â°C (140 to 150Â°F). It cools from the temperature at which it is brewed, especially if milk is added. The water for tea is normally brought to a full boil before the brewing process.