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When Do the Three Hands of an Analog Clock Overlap?
There is an interesting puzzle based on old-fashioned analog clocks.
Question:
How many times a day are the three hands of a clock exactly in line? What are the exact times? How can you calculate them?
Contributed by:
Frederick Wu
SNAPSHOTS
DETAILS
Answer:
This Demonstration solves this puzzle by finding the 12 times.
Snapshot 1: the first moment that the three hands overlap is at 0:0:0 or 12:00:00
Snapshot 2: the second moment is at 1:05:05
Snapshot 3: the last moment is at 11:59:59
Tip:
The "static" option is for turning the three hands to any position you want.
RELATED LINKS
Always the Right Time for
Mathematica
…
(
Wolfram Blog
)
An Automatic Analog/Digital Clock
(
Wolfram Demonstrations Project
)
An Analog Clock
(
Wolfram Demonstrations Project
)
PERMANENT CITATION
Frederick Wu
"
When Do the Three Hands of an Analog Clock Overlap?
"
http://demonstrations.wolfram.com/WhenDoTheThreeHandsOfAnAnalogClockOverlap/
Wolfram Demonstrations Project
Published: October 29, 2008
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