Shocker

I lie on my bed with my Macbook in front of me, writing a reflection on my first week in Tanzania. Feeling uncomfortable, I toss off my bednet, get off the bed and sit in a nearby chair, bringing my laptop over. I touch one of the ridges of my laptop. Ouch. Did that hurt? I can’t really tell, and touch it again. Is that how the ridge normally feels? It’s a bit sharp. Confused, I ask my roommate Erik to join me in touching the laptop. He (being the electrical engineering major) immediately pulls my Macbook charger out of the laptop and recoils upon touching the tip. “Static shock!” he says. “Really?” I say.

We begin to diagnose the problem. My charger is connected to a 6-outlet power strip and international adapter that we bought yesterday in a Tanzanian supermarket, which is connected to the wall. One of these is broken. Suspecting the Tanzanian-made power strip, we start testing all the outlets on the power strip and even substituting in one of our own power strips. But with each touch of the charger’s tip, we get shocked in greater disbelief. I begin to suspect my charger itself. Indeed, after plugging Ruth’s Macbook charger into the power strip, the shock is gone. So much for my Mag “Safe” Power Adapter; it probably suffered under the strain of Tanzanian humidity and the 240V outlets.

The shocking is entertaining though, so we bring another Tech in the World Fellow—Ramya—over to join in our discovery. Plugging my charger back in, I offer her the charger tip. She takes it in her hand, but… nothing. In confusion, I touch it but feel nothing! Erik finally touches it and recoils. Ramya and I look quizzically at Erik (who seems to be doubting his own senses), but he continues touching, and recoiling from, the charger tip. Ramya and I try again and again but just can’t figure out how to shock ourselves. Erik suddenly says, “Take off your shoes.” I kick off my flip flops and feel the cool tile floor, touching the tip again. Ouch!

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