(or, why it’s bad to quick pulse the sink garbage disposal)
Me: Oh no, the sink disposal stopped working. The day before Thanksgiving, no less!
Supportive Boyfriend: That’s because you broke it.
Me: No, I didn’t break it?! How did I break it?!
Supportive Boyfriend: How many times? I told you not to quick pulse it!
…
Me: Why would that break the disposal?
SB: How shall I explain this? Okay, it’s like this. A house is protected by a circular dam. Let’s say there’s a flood of water. It hits the dam once and then flows around it. Then the water drains and the dam and house are fine. Safe as houses, ha ha.
SB: Now let’s say there’s a quick tidal wave. That would hit the dam and cause a bit of damage, but that’s fine. Now let’s imagine there are lots of sudden tidal waves, all in quick succession. Each one hurts the dam before it has time to recover, and before you know it the dam is broke and you’re house is flooded.
…
Me: Hmm. Oh I get it. It’s like at work, we’ve got these fluorescent microscopes powered by xenon and argon lamps. We have to leave the lamps on for at least half an hour before powering them off, and once they’re off they have to stay off for half an hour before turning them on again. That’s because every time you switch on or off the lamp it causes a massive power surge, it’s better to keep them running awhile. I had no idea the garbage sink disposal works the same way!
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