What is the purpose of dark matter?

What is the purpose of dark matter? [+] Dark matter is the most mysterious, non-interacting substance in the Universe. Its gravitational effects are necessary to explain the rotation of galaxies, the motions of clusters, and the largest scale-structure in the entire Universe. Can we see dark matter? Although we cannot see dark matter and we […]

What frequencies are dangerous?

What frequencies are dangerous? The most restrictive limits on whole-body exposure are in the frequency range of 30-300 MHz where the RF energy is absorbed most efficiently when the whole body is exposed. For devices that only expose part of the body, such as mobile phones, different exposure limits are specified. What is the range […]

What is heat loss by radiation?

What is heat loss by radiation? Radiation is a form of heat loss through infrared rays. This involves the transfer of heat from one object to another, with no physical contact involved. For example, the sun transfers heat to the earth through radiation. The last process of heat loss is evaporation. How can a patient […]

What is period of the wave?

What is period of the wave? The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately […]

How does air resistance affect cars?

How does air resistance affect cars? Air friction does not significantly affect a car’s gas mileage. Cars are slowed down when they stir up the air too much. Stirring up the air creates vortices and billows that take energy away from the car. This effect is known as “wake drag”, “pressure drag”, or “form drag”. […]

How can I minimize my carbon footprint?

How can I minimize my carbon footprint? 7 Instant Ways To Reduce Your Carbon Footprint Stop Eating (or Eat Less) Meat. The single most effective action you can take to combat climate change is to stop eating meat. Unplug Your Devices. Drive Less. Don’t Buy “Fast Fashion” Plant a Garden. Eat Local (and Organic) Line-Dry […]

Is it rude to say here you go?

Is it rude to say here you go? “Here you go” and “There you go” are quite informal. If you say this to your teacher or your boss, they might think you’re being rude or impolite. So use the more formal “Here you are” or “There you are” instead. How do you say no comprende? […]

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