What is the dark matter principle?

What is the dark matter principle?

Dark matter can refer to any substance which interacts predominantly via gravity with visible matter (e.g., stars and planets). Hence in principle it need not be composed of a new type of fundamental particle but could, at least in part, be made up of standard baryonic matter, such as protons or neutrons.

What is the symbol for dark matter?

Here the Greek letter Lambda is the symbol for dark energy, and CDM stands for Cold Dark Matter.

What did the holographic principle say about things that fall into a black hole?

The holographic principle is a property of quantum gravity theories which resolves the black hole information paradox within string theory. For a black hole, the principle states that the description of all the objects which will ever fall in is entirely contained in surface fluctuations of the event horizon.

What is the basic principle of holography?

The basic principle of holography consists of the recording of the hologram by interference between the object wave and the reference wave followed by the diffraction and propagation of another reference wave resulting in the formation of the holographic image.

How is dark matter measured?

We can detect the dark matter through gravitational lensing, which detects shifts in light produced by distant celestial objects [5]. The bright spots outside the colored areas are stars and galaxies that are not part of the Bullet Cluster (Credit: X-ray: NASA/CXC/CfA/ M.

What is dark matter example?

Dark matter is the term astronomers use to describe material in the universe that does not emit or reflect light and is, therefore, invisible. Stars, nebulae, and galaxies are examples of luminous objects in the sky.

What does matter turn into in a black hole?

When matter falls into or comes closer than the event horizon of a black hole, it becomes isolated from the rest of space-time. Once inside the black hole’s event horizon, matter will be torn apart into its smallest subatomic components and eventually be squeezed into the singularity.

What is the difference between holography and hologram?

Holography is defined as a method of producing a three-dimensional (3D) impression, or photographic image, of an object. The recording and the image it brings to life are each referred to as holograms. The word hologram is derived from the Greek word holos, or hole, and gram, or message.

Is the holographic principle true?

Some physicists actually believe that the universe we live in might be a hologram. The idea isn’t that the universe is some sort of fake simulation out of The Matrix, but rather that even though we appear to live in a three-dimensional universe, it might only have two dimensions. It’s called the holographic principle.

What is dark matter and how do we detect it?

We’ve never been able to directly detect dark matter in any form, but we know it exists through its effects on the universe, especially through the orbital velocities of stars and gravitational lensing of light around “invisible” objects.

What is the composition of dark matter?

Most scientists think that dark matter is composed of non-baryonic matter. The lead candidate, WIMPS (weakly interacting massive particles), have ten to a hundred times the mass of a proton, but their weak interactions with “normal” matter make them difficult to detect.