Sun Clock

The sundial is an instrument for measuring time based on the Sun’s position.

Egyptians made the first known sundial.  In the usual sundial designs, the shadow of a vertically mounted bar falls on the dial that shows the hours of the day on a horizontally placed surface. As the sun advances in the sky, the shadow left by the end of the bar on the clock moves to coincide with different clock lines. In these designs, the bar needs to be aligned to the axis of rotation of the Earth. Therefore, in order for this type of sundial to show the correct time, the bar must be geographic north, not magnetic north. In addition, the angle that the rod will make with the horizontal plane must be equal to the geographical latitude where the clock is located. Still, sundials that do not have these two features and operate within the framework of different principles can also be designed. These clocks can be made by placing a bar in the middle of a circle and with the help of a compass (pointing north everywhere) by marking where the shadow falls. But factors such as cloudy days and night will make this type of clock unusable.

Question

You went to the woods to camp with your classmates.
But you forgot to buy your watch .
Your friend Artur is on medication because he’s sick .
You have to take this medication with an 8-hour Dec .
How would you go about solving problems like clock and time editing?
If you don’t have your watch, what do you do to determine the time of day?

ELVAN İNAN

BANDIRMA BILSEM

MERT KOÇER

Kusadasi Makbule Hasan Ucar Anatolian High School

SERGİN ŞAHİNOĞULLARIGİL

ADANA İSMAİL KULAK ANATOLIA HIGH SCHOOL

PUPİL EYLÜL

Ayşe KARABACAK

Karaman Science and Art Center

ARZU BEBEK BUYRUK

İSKENDERUN BİLSEM

Gonca BAHAR

YUSUF KALKAVAN ANADOLU LİSESİ

Ahu Deniz ULUDAĞ

İSKENDERUN BILSEM

SEYİDE EROĞLU

NUH MEHMET BALDÖKTÜ ANATOLIA HIGH SCHOOL

Hatice GERGİN

Şehit Prof. Dr. İlhan Varank BILSEM

Fatih AKBULUT

Şarkikaraağaç Science High School

Eda Ekşioğlu Mersin EFL 

Pupil Güven

SEVDA YÜCE

ANKÜ