05/03/2026
C. V. Raman Lecture - 7 March 2026, 10:30 AM
Venue: Seminar Hall, Priyadarsini Planetarium, Thiruvananthapuram
Understanding Response Time-Delays: The Case of Hysteresis in Magnets
The Indian Physics Association, in association with the Kerala State Science and Technology Museum, Indian Institute of Science Education and Research Thiruvananthapuram, and the Breakthrough Science Society (Trivandrum Chapter), is organizing a special C. V. Raman Lecture for students, teachers, and physics enthusiasts.
The lecture will be delivered by Deepak Dhar, a globally respected theoretical physicist from the International Centre for Theoretical Sciences (ICTS), Bangalore.
Event Details
Date & Time: 7 March 2026, 10:30 AM
Venue: Seminar Hall, Priyadarsini Planetarium, Thiruvananthapuram
Registration: Free
https://forms.gle/qeS6wXw4A8j2WbKi7
About the Topic
In many physical systems, the response to an external influence is not instantaneous. The system “remembers” its past. One striking example is seen in magnetic materials, where the magnetization does not simply follow the applied magnetic field but depends on its history. This phenomenon, known as hysteresis, produces the characteristic hysteresis loop familiar in magnetism.
Understanding such response time-delays is not only a fascinating problem in fundamental physics but also has important technological implications in devices such as transformers, electric motors, sensors, and magnetic storage systems.
In this lecture, Prof. Dhar will explore how physicists study these delayed responses in magnetic systems and what they reveal about the deeper behaviour of complex physical systems.
About the Speaker
Prof. Deepak Dhar is one of India’s most eminent theoretical physicists, internationally known for his pioneering contributions to statistical physics, complex systems, and self-organized criticality.
His scientific achievements have been recognised through several prestigious honours, including:
• Boltzmann Medal (2022) – the highest international recognition in statistical physics
• Padma Bhushan (2023) – India’s third-highest civilian award
• Shanti Swarup Bhatnagar Prize in Physical Sciences
• TWAS Prize in Physics
• S. N. Bose Medal of the Indian National Science Academy
He has played a major role in shaping modern research on how large interacting systems exhibit collective behaviour, a topic that connects physics with fields ranging from materials science to complex networks.
Students of Physics, Mathematics, Materials Science, and related disciplines are especially encouraged to attend this opportunity to interact with one of the leading thinkers in modern theoretical physics.
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