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0xDEADBEEF
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What is the qualitative difference between rms and the mean of the absolute value? For what datasets do they differ most?
0xDEADBEEF said:What is the qualitative difference between rms and the mean of the absolute value? For what datasets do they differ most?
Dark matter is a type of matter that emits no light or other electromagnetic radiation, making it invisible to telescopes. Its existence is inferred by its gravitational effects on visible matter. It is important because it makes up about 85% of the total mass of the universe and its presence is necessary to explain the observed structure and dynamics of galaxies and galaxy clusters.
Vaccines work by introducing a weakened or inactive form of a disease-causing pathogen into the body, triggering the immune system to produce antibodies to fight against it. These antibodies remain in the body, providing protection against future infections. Vaccines are necessary because they help prevent the spread of infectious diseases and protect individuals and populations from potentially life-threatening illnesses.
Currently, time travel is not possible according to our current understanding of physics. The concept of time travel is still debated among scientists and there are various theories and ideas about how it could potentially be achieved, such as using wormholes or manipulating space-time. However, these theories are still hypothetical and have not been proven to be feasible.
Earthquakes are caused by the sudden release of built-up stress and energy in the Earth's crust. This can be due to tectonic plate movements, volcanic activity, or human activities such as fracking. While we have advanced technology that can detect seismic activity, we currently do not have the ability to accurately predict when and where an earthquake will occur. Scientists are constantly researching and developing new methods to improve earthquake prediction, but it is a complex and unpredictable phenomenon.
Plants produce oxygen through a process called photosynthesis. They use energy from sunlight to convert carbon dioxide and water into glucose (a type of sugar) and oxygen. This process occurs in the chloroplasts of plant cells and is essential for the survival of plants and other organisms that rely on oxygen for respiration. Without plants, there would not be enough oxygen in the atmosphere for animals to breathe.