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Science
The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.
203,801 Questions
What did the aztecs do to please their gods?
The Aztecs pleased their gods through offerings and sacrifices. They offered items like food, flowers, and precious objects, as well as human sacrifices which were seen as the most valuable offering. Performing rituals and ceremonies in honor of the gods was also important in Aztec religious practices.
Living on Mars is currently not possible because it lacks a breathable atmosphere, has extreme temperatures, and high levels of radiation. These conditions make it difficult for humans to survive without extensive life support systems and technology that has not yet been developed for long-term habitation.
When is a shooting star going to take place?
Shooting stars, or meteors, are random events that occur when debris falls into Earth's atmosphere and burns up. You can observe them during meteor showers, which have predictable peak dates each year. Keep an eye out for upcoming meteor shower schedules to increase your chances of seeing a shooting star.
What is the efficiency to concentrate sunlight with a lens?
The efficiency of concentrating sunlight with a lens can vary depending on factors such as the type of lens used, the quality of the lens, and the design of the system. In general, efficiencies can range from 70-90% for high-quality lenses used in concentrated solar power systems.
Can an outdoor security light be shut off from someone using a lazer beam on it?
It is possible to disable some outdoor security lights by shining a laser beam directly into the sensor to trick it into thinking it is daylight, causing the light to turn off. However, this method may not work for all security lights depending on the type of sensor used and the intensity of the laser beam.
What should I do If I get abducted by a Jupitertian?
Jupitertians have a strong if weird sense of honour (they even spell it like Canadians do). If they abduct you they have to fulfill your every desire related to fiscal responsibility. So tell them that you made a 14 billion dollar investment at 14% interest compounded daily and you want the interest paid to you heirs weekly. The financial burden that this would place on them would strongly motivate them to return you as quickly as they possibly could.
What is the Average Distance from the sun of the Mercury?
If you meant to ask "What is the average distance from the sun for mercury"? The answer is 36 million miles (58 million kilometers)
What is the first part of eye that reflects light?
The cornea is the first part of the eye that light encounters. It acts as a protective covering for the iris, pupil, and anterior chamber.
Cows grow by consuming food, which provides them with the necessary nutrients for growth and development. During the growth process, cows go through different life stages such as calf, heifer, and adult cow. Genetics, diet, and environmental factors all play a role in the growth of cows.
What do tears in the Sun's corona provide an exit for?
Tears in the Sun's corona provide an exit for solar material and charged particles, which escape into space as the solar wind. This phenomenon can impact space weather and affect the Earth's magnetosphere.
The time it takes a pendulum to complete a full swing is given by the formula:
T = 2 pi sqrt(L/g)
where L is the length of the pendulum, and g is acceleration due to gravity. With a little algebra we can rearrange this to get:
g = (2 pi / T)^2 L
So measure the length of your pendulum to get L, then measure how long it takes for a complete swing, plug it into the formula, and there's your acceleration due to gravity. You can try it here on Earth and see what you get.
In which direction do the stars appear to move?
The stars appear to move from east to west across the night sky due to Earth's rotation on its axis. This motion creates the illusion that the stars are moving, when in fact it is our own planet that is rotating.
Is the sun an illuminated object?
Yes, the sun is an illuminated object. It emits its own light and energy through nuclear fusion processes happening in its core, making it one of the main sources of light and heat in our solar system.
Can someone please explain why Rygel has a red eye in season four of Farscape?
In season four of Farscape, Rygel has a red eye due to an infection. The infection causes his eye to become inflamed and discolored. It is a temporary condition that is addressed and resolved within the season.
What are good and bad points about natural levees?
when bad construction of a dike fails, there is sometimes a huge rush of water which could cause loss of property and lives. the Department of Enviormental Protection requires a "water obstruction and encroachment permit" be given before any dike or levee is built in order to ensure safeness.
List of things that give off light?
Sun, moon, stars, light bulbs, candles, fireflies, and glow sticks.
Why cant you see when the lights go out?
Your eyes depend on light reflection in order to enable you to see. Light reflects off an object and bounces into your pupil and stimulates the cones and rods in your retinas thus enabling you to see the object.
In the UK it is hotter in June than in December?
This is correct. In the UK, June tends to be warmer than December due to the summer season occurring in June and winter season falling in December. This difference in temperature is influenced by factors such as the position of the sun, daylight hours, and weather patterns.
When did Yuri Gagarin become the first person in space?
Yuri Gagarin became the first person into outer space on the 12th of April, 1961.
What did the first compass look like?
The first compass was a simple magnetic needle floating in water, with markings indicating the cardinal directions. It lacked a housing and was more primitive compared to modern compasses. Early compasses were used for navigation by aligning the needle with Earth's magnetic field to determine direction.
Long refers to time and the time it takes to cross the US is dependent on the distance it is across the US and the rate of travel used. As there are various rates of travel possible then there is a range of times for crossing the country.
No not yet, there are many internet web sites that are trying to create Air Treks and some are very close to finishing, but funding is a problem and so that's why no prototypes have been made...
if you want to help create them go here
http://z13.invisionfree.com/TheAtProject3/index.php?act=idx
but make sure you actually want to help.
darker lens' are mostly for look and will block out more visible light but not the harmful UV rays. if u want glasses that will offer good protection check to see if they are polarized this is the best possible eye protection.
answer 2 In rare circumstances, the intensity of the UV light may be instantly damaging. For example the light from an arc welder. In this case, very dark lenses are needed. For ordinary levels of UV, then a yellow or orange lens will effectively block UV rays. Have you seen the orange shades the folk on CSI use when they need to use a UV light source?
Neon lights were invented in 1910 by Georges Claude as a way to create a vibrant and energy-efficient alternative to incandescent lighting. They gained popularity for their colorful glow and durability, and were used in advertising signs and decorative lighting.
Earthworms do not have eyes, they do have cells that are sensitive to light distributed through their outer skin. These don't let earthworms see images, but it does allow their skin to detect light and changes in light intensity. earth worms are more sensitive to the chemical and temperature in the environment around them.
