21-December... Discovery of Radium...

Marie Curie and Pierre Currie jointly discovered Radium on this day (21-dec) in 1898, revolutionizing the understanding of radioactivity...

During the discovery, the Curies' isolated Radium from Uranium ore, unveiling its unique properties and intense glow... This significant finding not only expanded the periodic table but also laid the foundation for advancements in medical treatments, particularly in Cancer therapy... 

The Curies' dedication and pioneering research earned them the Nobel Prize in Physics in 1903, marking a crucial moment in the history of Science and Radiation studies...

French Postal Administration marked the 40th anniversary of the Discovery of Radium with the release of concerted charity joint postage stamp valued at 1f 75 French francs plus 50 cents in 1938...

The concerted charity joint postage stamp was released by the Postal Administration's of French colonies which included Cameroon, Dahomey, French Equatorial Africa, French India, French Guinea, French Guyana, Guadeloupe, Indochina, Ivory Coast, Madagascar, Martinique, Mauritania, New Caledonia, Niger, Reunion, Saint Pierre and Miquelon, Senegal, Somali Coast, Sudan and Togo...  The concerted charity joint stamp was also released by Afghanistan, Paraguay and Cuba, which were not French Colonies...

The text in French on the stamp translates to... 

           Pierre et Marie Curie découvrent le Radium - Pierre and Marie Curie discovered Radium

           Union Internationale Contre le Cancer  - International Union against Cancer

           R.F. stands for Republique Francaise (French Republic)

This stamp can be collected under the themes: 

(a) Science and Technology...

(b) Concerted Joint Stamps...

(c) Charity Stamps...

(d) Discovery...

(e) Nobel Laureates...

(f) Scientists...

(g) Anniversaries / Jubilees... 

15-December... Birth Anniversary of Henri Becquerel...

Birth anniversary of the pioneer of radioactivity, Henri Becquerel is celebrated on this day (15-dec)... 

Henri Becquerel, a French physicist renowned for his groundbreaking work in radioactivity...  In 1896, he discovered radioactivity while investigating phosphorescent materials... This discovery earned him the Nobel Prize in Physics in 1903 which he shared with Pierre and Marie Curie...

Becquerel's research laid the foundation for further developments in Nuclear Physics and paved the way for understanding the fundamental principles of Atomic structure...

Henri Becquerel's discovery of radioactivity reached its zenith during its 50th anniversary, marked by a noteworthy celebration...  The French Postal Administration, in 1946, commemorated this milestone by issuing a charity stamp valued at 2 plus 3 French francs, symbolizing the enduring significance of Becquerel's contribution to Nuclear Science...

The text in French on the stamp translates to... 

             Lutte Contre Le Cancer - Fight against Cancer

              Radioactivité  - Radioactivity

              R.F. stands for Republique Francaise (French Republic)

This stamp can be collected under the themes: 

(a) Science and Technology...

(b) Nuclear Science...

(c) Nobel Laureates...

(d) Scientists...

(e) Anniversaries / Jubilees... 

29-November... Birth anniversary of Henri Fabre...

The birth anniversary of a pioneering French aviator and inventor, Henri Fabre was celebrated on this day (29-nov)... 

Henri Fabre left an indelible mark on aviation history...  In 1910, he achieved a groundbreaking feat by constructing and piloting the Fabre Hydravion, the world's inaugural successful seaplane...  This achievement was a testament to Fabre's innovative spirit and marked a pivotal moment in the evolution of aviation technology...

A visionary who contributed significantly to the progress of aviation, Henri Fabre was commemorated by French Postal Administration with the release of a 3.00 Euro postage stamp in 2010 to mark 100 years of First Seaplane Flight by Henri Fabre...

The text in French on the stamp translates to... 

             1910 Premier Vol En Hydravion - 1910 First Seaplane Flight                   

             Poste aerienne - Airmail

This stamp can be collected under the themes: 

(a) Aviation...

(b) Aircraft / Flight / Seaplane...

(c) Anniversaries / Jubilees...  

26-November... Final Flight of Concorde...

Concorde, a supersonic ballet in the clouds, made its final flight on this day (26-nov) in 2003, marking the end of an extraordinary era in aviation...

Concorde, the marvel of aeronautical engineering, wa a supersonic passenger jet that transcended boundaries of speed and luxury...  With its sleek delta wings and a distinctive needle-like nose, the Concorde could reach twice the speed of sound, reducing transatlantic flights to a mere fraction of conventional time...

The symbol of prestige and technological prowess, Concorde was commemorated by French Postal Administration with the release of a 4.20 Euro postage stamp in 2019 to mark it's 50th anniversary of Concorde's first flight...  

The text in French on the stamp translates to... 

              50 Anniversaire du Premier vol du concorde - 50th Anniversary of First Flight of                                                                                                                     Concorde

              Poste aerienne - Airmail

This stamp can be collected under the themes: 

(a) Aviation...

(b) Aircraft...

(c) Anniversaries / Jubilees...