US 2021 Chien-Shiung Wu, Nuclear Physicist 55c. Scott. 5557


US 2021 Chien-Shiung Wu, Nuclear Physicist 55c. Scott. 5557


Stamp details: Chien-Shiung Wu, Nuclear Physicist

Issued date: 11-02-2021 (dd/mm/yyyy)
Face value: 55c.
(FOREVER - No Face Value)

Format: Pane of 20

Emission: Commemorative
First Day City: New York, NY

Catalogue No:-
Scott (USA): 5557
Michel (Germany): 5790BA
Yvert et Tellier (France): 5399
Unificato (Italy): 5949A

Designers: Ethel Kessler (designer) ; Kam Mak (artist)

Dimensions (height x width):
39.75mm x 25mm

Printer: Ashton Potter (USA) Ltd.
Print Method: Offset, Microprint

Perforation: Serpentine Die Cut 11

Stamp Colors: Multicolored
Gum type: Self-Adhesive

Themes: Famous People, Physicist, Scientist, Woman

Total print: 18,000,000 (estimate)

Note: Face value US$0.55 on day of issue.

Description:- Chien-Shiung Wu (1912-1997) was a Chinese-American particle and experimental physicist who made significant contributions in the fields of nuclear and particle physics. Wu worked on the Manhattan Project, where she helped develop the process for separating uranium into uranium-235 and uranium-238 isotopes by gaseous diffusion. She is best known for conducting the Wu experiment, which proved that parity is not conserved. This discovery resulted in her colleagues Tsung-Dao Lee and Chen-Ning Yang winning the 1957 Nobel Prize in Physics, while Wu herself was awarded the inaugural Wolf Prize in Physics in 1978. Her expertise in experimental physics evoked comparisons to Marie Curie. Her nicknames include the "First Lady of Physics", the "Chinese Madame Curie" and the "Queen of Nuclear Research".
Source: en.wikipedia.org/wiki/Chien-Shiung_Wu