Keffer Hartline's Birth Card: The 9 of Hearts

In the record

Haldan Keffer Hartline (December 22, 1903 – March 17, 1983) was an American physiologist who was a co-recipient (with George Wald and Ragnar Granit) of the 1967 Nobel Prize in Physiology or Medicine for his work in analyzing the neurophysiological mechanisms of vision. The birth-card coordinate for December 22 is the 9 of Hearts — a calendar position, not a forecast of the 1967 Physiology or Medicine prize.

Nobel Prize record

• 1967 The Nobel Prize in Physiology or Medicine — for their discoveries concerning the primary physiological and chemical visual processes in the eye

The 9 of Hearts coordinate

Keffer Hartline's birthday maps to the 9 of Hearts (The Compassionate Idealist). Card Blueprints treats that as a 365-day coordinate: solar value = 55 − (2 × month + day), and the year is unused. It is not a prediction about a Nobel Prize and not a verdict on Keffer Hartline. The card's own language, quoted as system copy rather than biography: You stay kind without picking up what is not yours.

Live 9 of Hearts meaning page

Keffer Hartline in the public record

Haldan Hartline did his undergraduate studies at Lafayette College in Easton, Pennsylvania, graduating in 1923. He began his study of retinal electrophysiology as a National Research Council Fellow at Johns Hopkins School of Medicine, receiving his medical degree in 1927. After attending Leipzig University and the Ludwig-Maximilians-Universität München as an Eldridge Johnson traveling research scholar from the University of Pennsylvania, he returned to the US to take a position in the Eldridge Reeves Johnson Foundation for Medical Physics at Penn, which was under the directorship of Detlev W. Bronk at that time. In 1940–1941, he was Associate Professor of Physiology at Cornell Medical College in New York City but returned to Penn and stayed until 1949. Then he became professor of biophysics and chairman of the Jenkins Department of Biophysics at Johns Hopkins University in 1949. One of Hartline's graduate students at Johns Hopkins, Paul Greengard, also won the Nobel Prize. Hartline joined the staff of Rockefeller University, New York City, in 1953 as professor of neurophysiology.

Summarised from the lead section of the Wikipedia article Haldan Keffer Hartline (CC BY-SA 4.0). No biographical facts were written for this page beyond that article.

Where the record meets the Jack of Clubs

A card is a calendar coordinate, not a cause. What follows sets one line of the card's own published language beside one sentence of the sourced record, paired by a documented rule. It is a resemblance offered for the reader to weigh — not a claim about Keffer Hartline, and not a forecast of a Nobel Prize.

Ability to inspire intellectual breakthroughs

After attending Leipzig University and the Ludwig-Maximilians-Universität München as an Eldridge Johnson traveling research scholar from the University of Pennsylvania, he returned to the US to take a position in the Eldridge Reeves Johnson Foundation for Medical Physics at Penn, which was under the directorship of Detlev W.

Paired on the mind and communication — the domain ♣ governs in this system. Markers in the record: physics, research, scholar.

Also on the record

1. Hartline investigated the electrical responses of the retinas of certain arthropods, vertebrates, and mollusks, because their visual systems are much simpler than those of humans and thus easier to study.
2. He concentrated his studies on the eye of the horseshoe crab (Limulus polyphemus).
3. Using minute electrodes, he obtained the first record of the electrical impulses sent by a single optic nerve fibre when the receptors connected to it are stimulated by light.
4. He found that the photoreceptor cells in the eye are interconnected in such a way that when one is stimulated, others nearby are depressed, thus enhancing the contrast in light patterns and sharpening the perception of shapes.

Other laureates with this card

• E. M. Purcell — 1952 Physics
• Ernest Rutherford — 1908 Chemistry
• Frank B. Kellogg — 1929 Peace
• Henri Moissan — 1906 Chemistry
• Jacobus H. van 't Hoff — 1901 Chemistry
• Lars Peter Hansen — 2013 Economic Sciences
• M. Stanley Whittingham — 2019 Chemistry
• Richard Stone — 1984 Economic Sciences
• Simon van der Meer — 1984 Physics
• The Svedberg — 1926 Chemistry
• Thomas C. Südhof — 2013 Physiology or Medicine
• Tsung-Dao Lee — 1957 Physics

FAQ

What is Keffer Hartline's birth card?

The 9 of Hearts. December 22 maps to that card through the public Card Blueprints formula. The year of birth is not used.

Does a birth card predict a Nobel Prize?

No. These pages are coordinates, not fortune-telling. A birth card names a calendar day in a 52-card year. It does not forecast prizes, character, or fate.

Where do Keffer Hartline's dates come from?

Birth date 1903-12-22 is the Nobel Prize API v2.1 day-precision date, verified against Wikidata P569 (CC0, day precision, Gregorian preferred). The two sources match. Year-only Nobel dates and Nobel↔Wikidata conflicts are dropped, not guessed. Page hooks and evidence come from the Wikipedia REST summary (CC BY-SA 4.0).

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