Creating an Iron or Diamond Pickaxe. 1  1. Know that to mine diamonds, you need either an iron or diamond pickaxe. 2  2. Create a workbench, or crafting table, if you haven't already. 3  3. Create a wooden pickaxe.  4. Create a stone 1  pickaxe. 5. Build or find a furnace.  6. Build an iron pickaxe.
Isotherm an isogram of the temperature of air, water, or soil. Most commonly drawn are isothermal maps showing mean monthly air temperature over a number of years, mean temperature for any period of time, or the temperature at a definite moment of time.
Freezing level. The freezing level, or 0 Â°C (zero-degree) isotherm, represents the altitude in which the temperature is at 0 Â°C (the freezing point of water) in a free atmosphere (i.e. allowing reflection of the sun by snow, etc.). Any given measure is valid for only a short period of time, often less than a day.