Search results
Results from the WOW.Com Content Network
Large thermoscopes placed outdoors appeared to cause perpetual motion of contained water, and these were therefore sometimes called perpetuum mobile. [3] Galileo's own work with the thermoscope led him to develop an essentially atomistic conception of heat, published in his book Il Saggiatore in 1623.
1709 — Daniel Gabriel Fahrenheit constructed alcohol thermometers which were reproducible (i.e. two would give the same temperature) 1714 — Daniel Gabriel Fahrenheit invents the mercury-in-glass thermometer giving much greater precision (4 x that of Rømer). Using Rømer's zero point and an upper point of blood temperature, he adjusted the ...
On 2 December 1982 a souvenir sheet was issued to commemorate the 125th anniversary of the first postage Stamp of Sri Lanka. This was the first souvenir sheet of two stamps of different denominations: 50 cents and 2.50 rupees with a sheet value of Rs. 5. [5]
These early devices were called thermoscopes. The first sealed thermometer was constructed in 1654 by the Grand Duke of Tuscany, Ferdinand II . [ 1 ] : 19 The development of today's thermometers and temperature scales began in the early 18th century, when Daniel Gabriel Fahrenheit produced a mercury thermometer and scale, both developed by Ole ...
The history of Sri Lanka is unique because its relevance and richness extend beyond the areas of South Asia, Southeast Asia and the Indian Ocean. The early human remains which were found on the island of Sri Lanka date back to about 38,000 years ago (Balangoda Man). [citation needed]
ICRA Lanka adjudged the issue as an A Credit Enhancement rating with a stable outlook. [9] The company was awarded the silver award in the trading companies category at the 54th Annual Report Awards in 2018. The awards ceremony is organised by the Institute of Chartered Accountants of Sri Lanka and the ceremony was held at Shangri-La Colombo. [10]
A number of different units of measurement were used in Sri Lanka to measure quantities like length, mass and capacity from very ancient times. [1] Under the British Empire, imperial units became the official units of measurement [2] and remained so until Sri Lanka adopted the metric system in the 1970s.
A variation of this technology was a billing system called the Q System, typically used by medical and dental offices. A 'master' composed of a sheet of heavy backing paper and a thin sheet of ruled paper attached to it at the top edge was created for each patient. Billing entries were then made in pencil on the thin sheet for each patient visit.