Astrophysics
It is a spherical hypothetical megastructure that surrounds a star, designed to capture a significant fraction of the star's energy output and make it available to an advanced civilization.
What is Dyson Sphere ?
It is numerically equal to force of attraction between two unit masses placed unit distance apart.
What is the Universal Gravitational constant?
Type of electromagnetic radiation that has the highest frequency and the shortest wavelength, and is often used in medical imaging.
What are Gamma Rays?
This force binds protons and neutrons together and is charge independent.
What is Nuclear force?
This paradox in quantum mechanics involves a thought experiment in which a cat in a sealed box can be in a superposition of alive and dead states until observed.
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What is Schrödinger's cat paradox?
The apparent contradiction between the high probability of the existence of extraterrestrial civilizations and the lack of evidence for, or contact with, such civilizations.
Explain ‘Fermi Paradox’ in simple words?
It is the minimum velocity required for an object to maintain a stable orbit around another object in space.
What is orbital velocity?
Set of (four) equations that describe the behavior of electric and magnetic fields and how they relate to each other.
What are Maxwell's equations?
These are used to control the rate of fission of nuclear fuel- Uranium or Plutonium
What are Control Rods used for?
This principle of quantum mechanics states that particles can exist in multiple states at once until they are measured.
What is quantum superposition?
A set of long-term cycles in Earth's orbit and axial tilt that are believed to have a significant influence on Earth's climate.
What is Milankovitch cycle?
This detector, located in Louisiana and Washington, detected the first direct observation of gravitational waves in 2015.
What is the LIGO detector?
The force experienced by a charged particle moving through a magnetic field, used in devices such as particle accelerators and MRI machines.
What is the Lorentz Force?
It is carried out by uncontrolled nuclear fusion and is one of the largest explosions on earth.
Explain the working principle of hydrogen bombs/How are hydrogen bombs created?
This phenomenon in quantum mechanics involves the spontaneous decay of a particle that has not interacted with any other particles.
What is quantum tunneling?
It is a figure-eight-shaped curve that represents the apparent position of the Sun in the sky over the course of a year, as viewed from a fixed location on Earth at the same time each day.
What is Sun annalemma?
This phenomenon occurs when the path of light is bent due to the curvature of spacetime by massive objects, causing an observer to see multiple images of the same distant object.
What is gravitational lensing?
This phenomenon occurs when a charged particle moving faster than the speed of light in a medium emits radiation in the form of electromagnetic waves, resulting in energy loss and deceleration.
What is Cherenkov Radiation?
This describes the fact that the sum of components of a deuteron is greater than the total mass of a deuteron
What is mass defect?
This is the name of the theoretical particle that is thought to be responsible for the gravitational force in quantum gravity theories.
What is Graviton?
A Mars-sized object collided with the early Earth approximately 4.5 billion years ago, shortly after the formation of the solar system. This impact is believed to have created a massive cloud of debris that eventually coalesced to form the Moon.
Explain Giant Impact Hypothesis?
This theory proposes that gravity is not a fundamental force, but is instead an emergent phenomenon resulting from the collective behavior of many microscopic degrees of freedom.
What is the theory of emergent gravity?
This theorem describes the conservation of energy in an electromagnetic field, and is used to calculate the energy density of the electric and magnetic fields.
What is the Poynting Theorem?
It is a unit of area used to measure the reaction cross section (generally different from the geometric cross section) of atomic nuclei and subatomic particles in the study of their interactions with other nuclei or particles.
What is one barn in Nuclear Physics?
This conjecture, proposed by John Archibald Wheeler in 1979, suggests that all particles and fields in the universe may be interconnected in a vast, self-contained network, giving rise to the notion that the universe may be a single, unified entity.
What is the "It from bit" conjecture?