For those unfamiliar with Manhattan geography, Manhattan is much longer on its roughly North-South axis than it is on its East-West axis, although the island is narrower at its southern edge. (And it turns out to be harder to quickly locate a map showing the entire island than one would think). The current (and possibly [...]
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The same messages can be communicated by signalling the letter "K" in Morse code via signal lamp. (While a proper signal lamp may be ideal, a flashlight, probably best employing red LEDs, will certainly fit the bill).
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