Why in the News?
Jayant Narlikar, renowned Indian astrophysicist and Padma Vibhushan awardee, who co-developed the Hoyle–Narlikar Theory to refine Einstein’s Theory of Relativity, passed away in Pune at the age of 87.
About Jayant Narlikar and His Contributions:
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What Is the Hoyle–Narlikar Theory?
Fred Hoyle and Jayant Narlikar developed a theory to answer one of the most basic questions: Why do things have mass, and how are they connected to the rest of the universe?
- Based on Mach’s Principle: They believed your mass isn’t just something you have on your own. Instead, it depends on your connection to everything else in the universe. That means even faraway stars and galaxies play a role in what you weigh.
- Inertia Explained: In simple terms, when you feel resistance while trying to move (inertia), it’s because of the gravitational pull of all the matter in the universe acting on you at once.
- Mass is Relative: Earth, the Sun, or even you don’t have a fixed mass. That mass is influenced by everything else that exists out there, no matter how far away it is.
- C-field and Steady-State Model
- New Idea – C-Field: They introduced the “creation field”, which creates new matter in space.
- Universe Without a Start: Their steady-state theory says the universe has no beginning or end, is always expanding, and keeps its density constant.
- Against the Big Bang: They believed the Big Bang couldn’t explain everything we see today.
- Hydrogen Creation: They said hydrogen atoms form in space to fill in the gaps as the universe grows.
- Issues with the Theory:
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- CMB Discovery (1965): Scientists found cosmic microwave background radiation, strong proof of the Big Bang.
- Other Evidence: Later discoveries like young, chaotic galaxies and studies by Hawking and Penrose supported the Big Bang.
- Current View: The Big Bang theory became more accepted, but Hoyle and Narlikar’s ideas are still respected for their scientific value.
| [UPSC 2018] Consider the following phenomena:
1. Light is affected by gravity. 2. The Universe is constantly expanding. 3. Matter warps its surrounding space-time. Which of the above is/are the prediction/predictions of Albert Einstein’s General Theory of Relativity, often discussed in media? Options: (a) 1 and 2 only (b) 3 only (c) 1 and 3 only (d) 1, 2 and 3* |
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