h a l f b a k e r ynon-lame halfbakery tagline
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So, the handle and the mechanism of the door opening
device will be coupled by custard... a well known
shear-thickening liquid. This will ensure that only
vigorous (non-sneaky) attempts to open the door will
cause thickening of the custard and operation of the
mechanism. Slow, sneaky quiet
attempts to open the
door will simply leave the custard in a very liquid state
decoupling the handle and the mechanism and leaving
the sneaky ninja trapped outside.
Should the movement of the handle not be enough to
cause thickening of the liquid... some form of
expensive and needlessly complex epicyclic gearbox
should be employed.
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Annotation:
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Yeah, I'd have no respect for a ninja who entered via the
door. That's just a rookie mistake, right there. |
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Except for the skilled veterans, who can enter through a door and make you THINK they came in a window. |
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But certainly they'd spot even the most elaborately-
concealed custard traps immediately. |
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Surely a ninja would just open press the handle down very quickly but totally silently? |
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This idea embodies the best in the spirit of the halfbakery and I nominate it for my new Golden Custard award. |
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// no respect for a ninja who entered via the door // |
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A really good ninja would dress as a cleaning person and get you to open the door. (I understand that the classic ninja black garb is really that of the stagehands of Japanese theater. They disguised themselves as non-noticed people--that particular garb somehow stuck. (A modern "ninja" disguises himself by dressing like a paparazzo, for instance, which mostly involves carrying a camera.)) |
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Bun for a creative use for non-Newtonian fluid. [+] |
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This is an outstandingly idea. |
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Agreed; this is quite definitely the finest idea incorporating both custard and ninjas that we have ever read in the last two hours. |
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More like old lady proof. Oh noes, the old ladies are coming to get me. |
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childproof depending on how fast you have to twist it. |
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In childproofing, I recommend twisting the little buggers very fast. |
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I see a happy ninja eating custard from a shiny brass
knob-shaped bowl. [+] |
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I like this.
If you alternated dilatant and thixotropic fluids of varying densities as in-line tumblers you could make an ergonomic handle turning lock. |
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I would suspect a clever ninja would heat the custard
up before attempting to open the door slowly. |
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"I would suspect a clever ninja would heat the
custard up before attempting to open the door
slowly" |
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Or freeze it, which would work for both Newtonian
and non-Newtonian fluids. |
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However my clever lock design would have expanding
ice pushing a spring loaded second bolt into the door
frame for freeze resistance. |
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Also the custard would be celery-flavour. Rendering it
eat-proof... |
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You could get round this with a vibrating device, it should keep out zombies though. |
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How about a door handle that is a hand wound air raid siren with a centripugal clutch that engages at a certain speed to open the door. |
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Or a door handle which consists of a peg and a sledgehammer, like one of those ‘try your strength’ machines at the fair - whack the peg, and the little thingy zooms up the frame and unlatches the door at the top? |
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