| Definition |
Neutrinos, often referred to as “ghost particles,” are subatomic particles with nearly zero mass and no electric charge. |
| Detection Challenge |
They traverse through matter with minimal interaction, making their detection extremely challenging. |
| Mass |
Previously believed to be massless, evidence indicates that neutrinos possess a very small mass. |
| Abundance |
Neutrinos are among the most abundant particles in the universe. |
| Behaviour |
Similar to electrons in terms of nuclear forces; both participate in weak nuclear interactions but not in strong nuclear interactions. |
| Production |
Produced during nuclear fusion in stars (e.g., the Sun) and nuclear fission in reactors. |
| Properties |
- Electric Charge: Electrically Neutral
- Mass: Extremely Low (Exact Masses Not Known)
- Types: Electron Neutrino, Muon Neutrino, Tau Neutrino
- Interaction: Weak Interaction
- Speed: Close to the Speed of Light
- Spin: Fermion, Half-Integer Spin
- Neutrino Oscillations: Neutrinos Change Flavor during Travel
- Interactions: Very Weak Interaction with Matter
- Cosmic Messengers: Can Carry Information from Distant Cosmic Sources
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| Why “Ghost Particles”? |
- Their weak charge and almost imperceptible mass make them exceedingly difficult to detect directly.
- Due to their rare interactions with other particles, tracking neutrinos is nearly impossible.
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