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Dieter FORSTER

Dieter FORSTER obituary, Philadelphia, PA

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Jacob F. Ruth Funeral Directors, Inc.

8413 Germantown Avenue

Philadelphia, Pennsylvania

Dieter FORSTER Obituary

FORSTER Dieter Dec. 7, 1938 – Nov. 6, 2025 Age 86, of Philadelphia, PA. Dieter died peacefully at home in Center City after several months of declining health. He was born to Willi and Martha (Kienzle) Forster in Gaildorf, Germany and graduated from the University of Stuttgart before earning a PhD at Harvard University in 1969. After teaching several years at Columbia University and the University of Chicago, Dieter joined the physics faculty at Temple University in 1974, becoming a Full Professor in 1977. He retired as Professor Emeritus in 2017. While at Temple he was for many years the Director of the Honors Program and was awarded the Great Teacher Award and named Professor of the Year (Honors). He was the author of an acclaimed book on theoretical physics in 1975 which is still in print and served for decades on the Franklin Institutes Committee on Sciences and the Arts (Physics Cluster). He was a member of the Germantown Cricket Club and the Franklin Inn Club. Primarily a scientist and proudly a teacher, Dieter was also an avid biker, tennis player, kayaker, skier (preferably alpine) and a decent piano player. He is survived by his wife of 54 years, Sara "Sammy" Wheeler Forster, a sister Sigrid Giering (Oswald), a brother Uli Forster (Gabi), a sister-in-law Sue W. Mason (Dwight), a brother-in-law Fayette Brown and many nieces and nephews. He was predeceased by a sister Gerda Beyer and sister-in-law Laurie W. Brown. His family is grateful for the care he received from the Univ. of PA hospice program and a number of dedicated Liberian caregivers. A celebration of his life will be held at a future date. (JACOB F. RUTH)

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Published by The Philadelphia Inquirer on Nov. 11, 2025.

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3 Entries

Alotaibi, Mohammad

November 14, 2025

His family and beloved ones, I´m deeply sorry for your loss.May your memories bring
you comfort and peace during this difficult time.

Dr. Dieter was my teacher in 1997 at Temple university for my physics class. He was the best proffessor I've ever had.
RIP and may Allah surround yoy with endless passion and light.

Elinor Donahue

November 13, 2025

Dieter Forster
What an impressive man, what a rich life. Among all his accomplishments and exuberances and joyful ways of being present in life, there´s one that stands out for me. That is, he was a wonderful master of conversation. Dieter could talk to anyone about anything. How enjoyable it was just to engage in conversation, and how comfortable he made it. This is a lost art in our time, but never with Dieter. What a wonderful presence, and we will miss him greatly.

Laura Levitt

November 12, 2025

It was always a pleasure coming to Honors and hanging out with Dieter and Ruth. It was my distinct honor to protest when the administration ousted Dieter from Honors for his passion and commitment. It was a protest joined by so many and we also did it out of love and intellectual commitment to the program he and Ruth initially built. I smile everytime I am in the wonderful Honors' spaces that continue to. be a site of curiosity, friendship, and play at the heart of Temple's campus. Dieter made this legacy possible. He hired Ruth... what more can I say! with love and deep sorrow. I will miss him on his bike, his laughter, and his wit! xo Laura

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