Marcus Johannes Sparnaay was a Dutch physicist known for his experimental confirmation of the Casimir effect. He earned his PhD at the University of Utrecht in 1952 and spent his career at Philips Laboratories in Eindhoven until 1983, where he contributed significantly to physics by measuring van der Waals forces. In 1958, he provided a much more accurate confirmation of the Casimir effect using a sophisticated lever device to measure forces between metal plates. His work validated theoretical predictions made by Hendrik Casimir and supported advancements in quantum physics.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 334 days away.
Death Anniversary
Next death anniversary is 223 days away.
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Meaning of the name - Marcus
warlike, dedicated to Mars
Read Full Marcus Name AnalysisAugust 23, 1923 Facts
Generation Group
Marcus Johannes Sparnaay belongs to the GI Generation group.
Place of Birth: Amersfoort
Educated At: University of Utrecht
Occupation: researcher | physicist | professor
Employers: Philips Laboratories (Nat-Lab) | University of Twente
Astrology Analysis
Note: This birth chart is calculated using the date and place of birth, with the time set to noon (12:00 PM) local time. While this provides accurate planetary positions for most celestial bodies, the Ascendant (Rising Sign) and house cusps are not calculated since they require precise birth time. For a complete astrological analysis including houses and rising sign, please provide the exact birth time.
Ephemeris for August 23, 1923
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on August 23, 2025 | Secondary Progressions for August 23, 2025 |
|---|---|---|---|
| Sun | 29 Leo 31 | 0 Virgo 49 | 10 Sagittarius 31 |
| Moon | 26 Capricorn 32 | 6 Virgo 7 | 9 Libra 53 |
| Mercury | 24 Virgo 42 | 13 Leo 10 | 20 Sagittarius 17 |
| Venus | 24 Leo 42 | 27 Cancer 38 | 1 Capricorn 49 |
| Mars | 24 Leo 42 | 10 Libra 34 | 29 Libra 45 |
| Jupiter | 11 Scorpio 59 | 16 Cancer 21 | 1 Sagittarius 48 |
| Saturn | 17 Libra 28 | 0 Aries 27 | 29 Libra 2 |
| Uranus | 16 Pisces 13 | 1 Gemini 24 | 13 Pisces 40 |
| Neptune | 18 Leo 21 | 1 Aries 33 | 20 Leo 21 |
| Pluto | 11 Cancer 53 | 1 Aquarius 55 | 11 Cancer 54 |
| Rahu | 11 Virgo 54 | 19 Pisces 4 | 6 Virgo 30 |
| Ketu | 11 Pisces 54 | 19 Virgo 4 | 6 Pisces 30 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
