Tuesday, January 22, 2013

Inflammable Organic Solvents in the Laboratory

Alcohol

Acetone

Phenol

Benzene

Ether
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Use of Laboratory Glasswares & Equipments

  1. Conical Flask
    To collect filtrates to mix solutions.
  2. Beaker
    To mix and put liquids.
    To measure solutions.
  3. Test Tube
    To mix liquids & separate.
  4. Boiling Tube
    Boil for certain amount of solution.
  5. Ignition Tube
    To heat in high temperature.
  6. Filter Funnel
    To filtrate liquids & solutions.
  7. Measuring Cylinder
    Measure liquids.
  8. Filter Paper
    Filter liquids regularly.
  9. Tongs
    To hold ignition tube & boiling tube.
  10. Test Tube Holder
    To hold the test tube & boiling tube.
  11. Wire Gauze
    To place on conical flask or beaker on the tripod stand.
  12. Tripod Stand
    To place flask or beaker which is to be heated.
  13. Wash Bottle
    To store distilled water.
  14. Spatula
    To take solid chemicals.
  15. Watch Glass
    To take solid chemicals & measuring.
  16. Glass Rod
    To filter & mix chemicals.
  17. Stand
    To hold the filter funnel.

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Wednesday, January 2, 2013

Degaldoruwa Temple Arts

Vessantara is shown the way to the big mountain by the kings.Detail of a narrative painting of Vessantara Jataka,Degaldoruwa Rajamaha Vihara, Gunnapana between 1771 & 1786.

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Dembawa Temple Arts

Battle with Mara. Painting on cloth (Petikada). Dembawa Rajamaha Vihara.
Late 18th century.


Divine being fanning the Buddha. Detail of a painting on cloth (Petikada). Dembava Rajamaha Vihara. Late 18th century.

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Etiquette

1 . Don’t call someone more than twice continuously. If they don’t pick up your call, presume they have something important to atte...