A welding torch might work. But it's not always very safe, since you are standing rather close to the thermite if you are torching it directly.
If you can't get your hands on magnesium, you can try to use some types of sparkler fuses. Some of these fuses are hot enough to initiate thermite, although I'll just go with magnesium to save the hassle if a fuse doesn't work.
Copper thermite is a type of thermite where instead of the iron oxide, copper oxide is used instead. The reaction produces pure copper metal, but this thermite gets a little more splattery than the iron thermite.
yes
yes
You probably think to anhydrous magnesium carbonate and hydrated magnesium carbonates: MgCO3, MgCO3.2H2O, MgCO3.3H2O, MgCO3.5H2O
Magnesium (Mg)
If you light a magnesium ribbon or something the fire produced can probably reach that heat too.
Thermal Burn
Thermite has its own oxygen source so it can burn without an outer source of oxygen, including underwater and in the vacuum of space. However, I do doubt that thermite can burn in space, since space is quite cold. It would just depend in how far away from the Sun you are when you light the thermite.
This is a a version of the Thermite reaction. 3Mg + Fe2O3 ------> 3MgO + 2Fe so iron metal and magnesium oxide are formed.
Thermite welding is all about using thermite for welding steel or iron. Thermite is actually a mixture of iron oxide and powdered aluminum.
yes magnesium is a light metal.
Copper thermite is a type of thermite where instead of the iron oxide, copper oxide is used instead. The reaction produces pure copper metal, but this thermite gets a little more splattery than the iron thermite.
Thermal burn. The molten metal and the heat of the reaction itself would burn your skin and/or a limb off your body if you are ever stupid enough to light it without the right precautions.
Ignited magnesium is both heat and light energy.
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Thermite is manufactured from pure metals and avoiding the use of carbon in the process of it. Thermite was originally discovered by a German chemist named Hans Goldschmidt.
There is no reason to use magnesium in light bulbs. Magnesium readily and easily catches fire and burns -- white hot.