/biz/ - Business & Finance

>>13738245
this

there are no bears or bulls, just winners and losers

friendly reminder to buy up some cheapies!

also almost new bread time

>>13150188
1.) no sources to produce industrial supplies of spider web (no one has millions of tons of spiders each individually hooked up to a silk spinning machine)

2.) its properties change drastically with humidity, and temp
a bridge as strong as steel on a cold dry day might be as strong as wet spaghetti on a warm rainy day (or visaversa, idk spider silk;s exact properties off the top of my head)

3.) just a hunch, but when people say its stronger than steel, they usually mean tensile strength
spider silk might have shit compressive strength (think the opposite of concrete, unbelievably high compressive strength, but its tensile strength is shit)

or the strands geometry might cause the stress/strain fields inside of the material to do some magical buggery like pic related (look up prince ruperts drop (the bulb can withstand almost any force, like a bullet fired directly at it)

also its shear strength might be shit, doesnt matter if the strings holding up your suspension bridge are made of the strongest tensile material in existence, if you can cut them completely from the shear force from the edge of a dry leaf brushing the wire at the right angle

im sure theres more reasons, sincs its an organic product im sure theres a bunch of common chemicals that can corrode it (if you ignore the very common chemical called water that can fuck up its material properties in very noticeable ways)

TLDR: strength can be a terribly generic or misleading description when used to make news headlines

i took two extra addis today, geek up as fuck