សិល្បៈ
សម្រស់ និង សុខុមាលភាព
សិប្បកម្ម
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
ការកម្សាន្ត
បរិស្ថាន
ម្ហូប និង ភេសជ្ជៈ
វិស្វកម្មបញ្ច្រាស
វិទ្យាសាស្ត្រ
កីឡា
បច្ចេកវិទ្យា
ប្រដាប់ដែលស្លៀក

ឧស្សាហកម្ម

418 ប្លង់មាន

ប្លង់ (418)

Reduced Iron: Iron Oxide Heated in Hydrogen, USP 1860
គ្រោះថ្នាក់

Reduced Iron: Iron Oxide Heated in Hydrogen, USP 1860

ដោយ CharlieDE

សម្ភារៈ

8
0
0
0
0
0
Subcarbonate of Iron: Iron Sulfate and Soda Crystals, USP 1860

Subcarbonate of Iron: Iron Sulfate and Soda Crystals, USP 1860

ដោយ CharlieDE

សម្ភារៈ

5
0
0
0
0
0
Nitric Acid: Chile Saltpetre Distilled with Oil of Vitriol in an Iron Retort
គ្រោះថ្នាក់

Nitric Acid: Chile Saltpetre Distilled with Oil of Vitriol in an Iron Retort

ដោយ CharlieDE

ឧស្សាហកម្ម

11
0
0
0
0
0
Oxalic Acid: Wood Soaked in Caustic Alkali and Heated in Hot Air at 300 °C (Plater-Syberg)
គ្រោះថ្នាក់

Oxalic Acid: Wood Soaked in Caustic Alkali and Heated in Hot Air at 300 °C (Plater-Syberg)

ដោយ CharlieDE

ឧស្សាហកម្ម

12
0
0
0
0
0
Oxalic Acid: Sawdust Heated with Alkali Lye in Vacuum, Oxidised, Precipitated as Calcium Oxalate (Zacher)
គ្រោះថ្នាក់

Oxalic Acid: Sawdust Heated with Alkali Lye in Vacuum, Oxidised, Precipitated as Calcium Oxalate (Zacher)

ដោយ CharlieDE

ឧស្សាហកម្ម

12
0
0
0
0
0
Diethyl Ether: Soubeiran's One-Operation Still with a Caustic Charcoal Purifier
គ្រោះថ្នាក់

Diethyl Ether: Soubeiran's One-Operation Still with a Caustic Charcoal Purifier

ដោយ CharlieDE

ឧស្សាហកម្ម

8
0
0
0
0
0
Urea: Extracted from Urine with Alcohol, Precipitated as the Nitrate, Freed with Barium Carbonate
គ្រោះថ្នាក់

Urea: Extracted from Urine with Alcohol, Precipitated as the Nitrate, Freed with Barium Carbonate

ដោយ CharlieDE

ឧស្សាហកម្ម

10
0
0
0
0
0
Urea: Separated from Urine as the Oxalate, Freed with Chalk and Crystallised

Urea: Separated from Urine as the Oxalate, Freed with Chalk and Crystallised

ដោយ CharlieDE

ឧស្សាហកម្ម

11
0
0
0
0
0
Ferrite Toroid Core: Copper-Zinc Ferrite Milled 200 Hours, Fired at 1050 °C (Snoek)

Ferrite Toroid Core: Copper-Zinc Ferrite Milled 200 Hours, Fired at 1050 °C (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

11
0
0
0
0
0
Ferrite Toroid Core: Magnesium-Zinc Ferrite (28 : 18 : 54) Fired at 1400 °C (Snoek)

Ferrite Toroid Core: Magnesium-Zinc Ferrite (28 : 18 : 54) Fired at 1400 °C (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

13
0
0
0
0
0
Ferrite Toroid Core: Nickel-Zinc Ferrite Fired at 1400 °C, Held at 930 °C (Snoek)
គ្រោះថ្នាក់

Ferrite Toroid Core: Nickel-Zinc Ferrite Fired at 1400 °C, Held at 930 °C (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

13
0
0
0
0
0
Ferrite Toroid Core: Copper-Zinc Ferrite Fired at 1050 °C, Held at 600 °C in Oxygen (Snoek)

Ferrite Toroid Core: Copper-Zinc Ferrite Fired at 1050 °C, Held at 600 °C in Oxygen (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

15
0
0
0
0
0
Ferrite Toroid Core: Magnesium-Zinc Ferrite Fired at 1300 °C in Oxygen (Snoek)

Ferrite Toroid Core: Magnesium-Zinc Ferrite Fired at 1300 °C in Oxygen (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

14
0
0
0
0
0
Ferrite Toroid Core: Magnesium-Zinc Ferrite Fired at 1400 °C in Oxygen (Snoek)

Ferrite Toroid Core: Magnesium-Zinc Ferrite Fired at 1400 °C in Oxygen (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

8
0
0
0
0
0
Laminated Phenolic Paper Sheet: Bakelite-Coated Kraft Paper Hot-Pressed and Baked (O'Conor, Westinghouse 1918)
គ្រោះថ្នាក់

Laminated Phenolic Paper Sheet: Bakelite-Coated Kraft Paper Hot-Pressed and Baked (O'Conor, Westinghouse 1918)

ដោយ CharlieDE

ឧស្សាហកម្ម

5
0
0
0
0
0
Liquid Bakelite: Phenol and Formalin Heated Together, the Oily Layer Kept (Baekeland 1909)
គ្រោះថ្នាក់

Liquid Bakelite: Phenol and Formalin Heated Together, the Oily Layer Kept (Baekeland 1909)

ដោយ CharlieDE

ឧស្សាហកម្ម

10
0
0
0
0
0
Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)
គ្រោះថ្នាក់

Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)

ដោយ CharlieDE

ឧស្សាហកម្ម

14
0
0
0
0
0
Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Acetic acid

Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Acetic acid

ដោយ CharlieDE

ឧស្សាហកម្ម

9
0
0
0
0
0
Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Acetone

Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Acetone

ដោយ CharlieDE

ឧស្សាហកម្ម

9
0
0
0
0
0
Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Isopropanol

Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Isopropanol

ដោយ CharlieDE

ឧស្សាហកម្ម

8
0
0
0
0
0
Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Methanol

Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Methanol

ដោយ CharlieDE

ឧស្សាហកម្ម

11
0
0
0
0
0
Diethyl Ether: Alcohol Dropped into Sulphuric Acid at 130–140 °C (Boullay's Continuous Method)
គ្រោះថ្នាក់

Diethyl Ether: Alcohol Dropped into Sulphuric Acid at 130–140 °C (Boullay's Continuous Method)

ដោយ CharlieDE

ឧស្សាហកម្ម

13
0
0
0
0
0
Tannic Acid: Galls Stirred to a Cream with Ether and Pressed (Leconnet)

Tannic Acid: Galls Stirred to a Cream with Ether and Pressed (Leconnet)

ដោយ CharlieDE

ឧស្សាហកម្ម

11
0
0
0
0
0
Tannic Acid: Powdered Galls Extracted with Ether and Alcohol (75:25)

Tannic Acid: Powdered Galls Extracted with Ether and Alcohol (75:25)

ដោយ CharlieDE

ឧស្សាហកម្ម

10
0
0
0
0
0
បង្ហាញ 24 ក្នុងចំណោម 418