Fig. 5.6 This elephant lamp made of bronze was discov-
ered from Kotawehera, Dedigama in Kegalle District. The
oil in the lamp is filled into the stomach of the elephant
image. When the oil level decreases, the principle of stat-
ic hydrology has been used to refill oil. This shows the
knowledge possessed by ancient craftsmen about the
principles related to Physics.Important Facts
The two terms ‘science’ and ‘technology’ mean
realizing the fundamentals prevailing in nature
and creating strategies to act accordingly.
Our ancient people had invented the
measurements for measuring space, time and
mass.
Our ancestors acted to make their activities
easy by applying the scientific fundamentals
practically.
The science invented by the Easterners is as
important as the science got developed in Western
countries. For example, the ancient scientific
ideas which prevailed in China influenced the
entire world. The sluice gate technology in Sri
Lanka spread in the South Asia.
The rituals and customs prevailing among
our villagers were invented by themselves to
solve their problems. It is another system of
knowledge.Activity 2- Write an essay on the scientific knowledge
and technical skills of our ancestors. - Explain the instances which reflect the local
identity through science and technology used in
the proto-historic era.
Sigiriya Water Park – The ruins in the Western part of the
Sigiriya rock reflect its water park. This park has been built
according to a symmetrical plan. The things which can be seen
on one side can be seen on the other side as well in the park.
The part in its western end has been introduced in the name of
‘Kshudra Jala Udyanaya’, which means ‘minor water park’.
The reason why the entire Western part of Sigiriya Park is
named as Water Park is that the things such as ponds, water
ditches, and beautiful water fountains had been built there.Kirimadu Yagaya – This is a performance of ‘Shantikarma’
done wishing for the security of cattle and success of
agricultural activities commonly. It is done primarily on an
indigenous god named ‘Mangara’. This is a practice common
to Sabargamuwa province.Diyaketa Pahana – It was a stone post connected to the sluice
of ancient tanks. Water is released out by moving this stone
post. The inscriptions mention that several such stone posts
were connected to the sluices in some large scale tanks.