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.
In meteorology, the term isotherm refers to a contour line that connects points on a weather map that have equal temperatures at a given time. Just as contour lines on topographical maps are used to show gradients of elevation, isotherms are used to show gradients of temperature. Isotherms usually are shown in five- or 10-degree intervals on maps. The temperature differences they delineate are often indicated by different colors. The curve of an isotherm is shaped by variations in temperature across the area being mapped.