01 August (Angola ) within release Portuguese Empire goes into circulation Stamp Vasco da Gama (1469-1524) face value 10 Angolan centavo
Stamp Vasco da Gama (1469-1524) in catalogues | |
---|---|
Michel: | Mi:AO 268 |
Yvert et Tellier: | Yt:AO 265 |
Stamp is vertical format.
Also in the issue Portuguese Empire:
Data entry completed
83%
|
|
---|---|
Stamp Vasco da Gama (1469-1524) in digits | |
Country: | Angola |
Date: | 1938-08-01 |
Size: | 27 x 36 |
Perforation: | comb 13½ x 13 |
Format: | Stamp |
Face Value: | 10 Angolan centavo |
Stamp Vasco da Gama (1469-1524) it reflects the thematic directions:
Exploration is the process of exploring, an activity which has some expectation of discovery. Organised exploration is largely a human activity, but exploratory activity is common to most organisms capable of directed locomotion and the ability to learn, and has been described in, amongst others, social insects foraging behaviour, where feedback from returning individuals affects the activity of other members of the group
Discovery is the act of detecting something new, or something previously unrecognized as meaningful. Concerning sciences and academic disciplines, discovery is the observation of new phenomena, new actions, or new events and providing new reasoning to explain the knowledge gathered through such observations with previously acquired knowledge from abstract thought and everyday experiences. A discovery may sometimes be based on earlier discoveries, collaborations, or ideas. Some discoveries represent a radical breakthrough in knowledge or technology.