Physicist
Arthur Jeffrey Dempster
Built the first modern mass spectrometer and discovered uranium-235.
Arthur Jeffrey Dempster was a Canadian-American physicist best known for his work in mass spectrometry and his discovery in 1935 of the uranium isotope 235U. As part of his research, he investigated the isotopic constitution of multiple other elements.
- Born
- 1886-08-14, Toronto, CanadaA Saturday
- Died
- 1950-03-11, Stuart, USAA Saturday, aged 63
- At birth
- Sun in Leo, Moon in Aquarius
- Nationality
- United States
- Birth-time source
- No birth time on record: Rodden X
Born
Died
At birth
Nationality
Birth-time sourceBirth Chart
1886-08-14, Toronto, Canada · time unknown, noon chart
America/Torontothe zone used then
America/TorontoThe chart
| Body | Sign | Degree | Motion |
|---|---|---|---|
| Sun | Leo | 21°46′ | Direct |
| Moon | Aquarius | 21°16′ | Direct |
| Mercury | Leo | 24°44′ | Retrograde |
| Venus | Cancer | 23°50′ | Direct |
| Mars | Libra | 25°17′ | Direct |
| Jupiter | Libra | 4°49′ | Direct |
| Saturn | Cancer | 17°11′ | Direct |
| Uranus | Libra | 5°19′ | Direct |
| Neptune | Taurus | 27°45′ | Direct |
| Pluto | Gemini | 4°00′ | Direct |
Death Chart
1950-03-11, Stuart, USA · time unknown, noon chart
America/New_Yorkthe zone used then
The chart
| Body | Sign | Degree | Motion |
|---|---|---|---|
| Sun | Pisces | 20°33′ | Direct |
| Moon | Sagittarius | 28°13′ | Direct |
| Mercury | Pisces | 6°18′ | Direct |
| Venus | Aquarius | 9°17′ | Direct |
| Mars | Libra | 6°16′ | Retrograde |
| Jupiter | Aquarius | 22°49′ | Direct |
| Saturn | Virgo | 15°41′ | Retrograde |
| Uranus | Cancer | 0°56′ | Direct |
| Neptune | Libra | 16°40′ | Retrograde |
| Pluto | Leo | 16°15′ | Retrograde |
Their Astrocartography
Where each planet sat on one of the four angles at the moment Arthur Jeffrey Dempster was born. Tap a line to read what the tradition associates with it.
Cast for noon, as the birth time is unknown, so the longitudes are approximate.