it has come to my intention that neither the black market or the warp shop sell Nether Quartz ( NOT the block ) and i need them for Redstone Comparator's i was just wondering is this on purpose or have you forgotten to put them in the shop thanks !
Well it is probably because they didn't find a need top to put them in, but they might if you get enough people that want it.
Anything you can do with a repeater or comparator you can also do with torches, blocks and plain redstone, it just takes more space is all
Jess i'm sorry but nothing is the same as a comparator. It gives off a signal like when something is in a hopper, chest, or storage device. A trapped chest is slightly similar but isn't the same.
that is one use that i didn't know about. More commonly i see them used in redstone circuits, similar to the way a bipolar junction transistor is used in electronics. (more generally to either compare two signals, or subtract one signal from the other)
just found the wiki page on it, its quite helpful if anyone is interested in learning more about comparators http://minecraft.gamepedia.com/Redstone_Comparator