|  A
clock and a shadow stick (sundial) measure two different things.
What
Do Clocks Measure?
A clock measures time passing in minutes in standard time
zones that humans created.
What
Do Shadow Sticks and Sundials Measure?
These measure the Earth's actual movement as it rotates on its
axis each day (called "local apparent time"). The
length of shadows and actual daylength differ from place to
place and from day to day as the earth revolves around the sun.
How Do Time Zones Fit In? |
