Kalyani Tupkary

But while nature may mete out time’s passage in these horological devices, it takes human observation of the heavens to set them. Even the most precise atomic clock must be periodically tweaked to account for variations in the earth’s rotation. Some clocks, however, are tuned more directly to nature.

While historical texts have long been subject to critical analysis, the formal and historical problems posed by graphic representations of time have largely been ignored. This is no small matter: graphic representation is among our most important tools for organizing information.*