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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

How does the human eye reflect colors and shapes?

The lens flips the image onto the retina. The retina is the light sensitive tissue at the back of the eye.

It contains cells called rods that are sensitive to light intensity and cells called cones that are color-sensitive.

The image is then transmitted to the brain via the optic nerve. The brain then interprets the image so that we are not aware that it has been flipped. Interestingly, experiments have been done where people where glasses to flip the images and after a few distressing and disoriented days, the wearer can resume virtually normal vision. The brain is wonderful.

Cats can not see in the dark but because they have a very high concentration of rods in their retinas they can see in low light intensity. Scientists can also determine that they have very little color vision.

How do you make a homemade alien project?

In order to make a homemade alien, one must first learn how to make slime through corn starch, putty , and various baking goods. This slime can be then poured into a mold which will yield a realistic alien.

What are some unknown facts about the sun?

How can we answer it if they are unknown?

Try finding out more information by researching it directly!

What instrument is used to view distant objects?

A telescope is an instrument used to view distant objects. Telescopes use lenses or mirrors to gather light and magnify images, allowing users to see objects that are far away, such as stars, planets, and galaxies.

Which optical instrument uses a large concave mirror a plane mirror and a convex lens to gather light focus and enlarge an image?

Astronomical telescopes use a large concave mirror, a plane mirror, and a convex lens in their design. The concave mirror gathers light, the plane mirror reflects it to a more convenient viewing location, and the convex lens magnifies and focuses the image for observation.

What is the function of pericardium in a pig?

The pericardium in a pig serves to protect the heart and help keep it in place within the chest cavity. It also helps prevent overfilling of the heart chambers by limiting expansion. Additionally, the pericardium contains fluid that reduces friction as the heart beats.

What would the closest parallel universe to ours be like theoretically speaking?

It depends. Since parallel universes are just theory, how they are different is unknown. If the same laws of physics still apply, it would be pretty much the same but different stars and planets, etc -- if the laws of physics differ it could be drastically different - stars might not form and it would just be a big empty void of nothingness.

Hope I helped.

Is red light visible?

That depends on whether it's still in the visible light range that human eyes can detect. If it's beyond red it will be infrared, a light wave with wavelength/frequency that we cannot detect.

The frequency range of red light is between 484 THz to 384 THz.

The wavelength of visible red light is between 620 nm to 750 nm.

What kind of environment did the pterotrigonia thoracica live in?

Pterotrigonia thoracica lived in marine environments during the Mesozoic era, around 200 million years ago. They thrived in warm, shallow seas with sandy or muddy bottoms. These bivalves were filter feeders, using their tentacles to capture plankton and other small particles for food.

When water is heated in the atmosphere what does it do?

If you're talking about the basic water cycle, starting in the ocean, water evaporates into vapor (Evaporation) rising up until it reaches it's the dew point, then the water condenses and travel towards higher ground, sometimes it travels as far as sea level ground (Condensation), when it reaches that heavy point where the clouds is too heavy to carry the water it drops taking about 10-15 minutes from the clouds to reaches the surface of the Earth if clouds are in the strato zone (Precipitation).

What are 5 major characteristics of the sun?

  • It's a star, and basically a large, burning ball of gas, and plasma interwoven with magnetic fields.
  • It's surface temperature is 5,800 degrees Kelvin, or 5505 degrees Celsius.
  • The diameter is 1,392,000 kilometers.
  • It is 98.86% of the total mass of the Solar System.
  • It is made up of mostly hydrogen, with some helium, and the rest are insignificant amounts of other gasses.

What is the scientific term for when two animals benefit from each other?

Mutualism is the scientific term for a relationship in which two animals benefit from each other. This type of symbiotic relationship is mutually beneficial for both species involved.

What food chain is a polar bear in?

Its the top predator but if you mean animals try algae-anchovies-salmon-polar bear

Is being a vet a science field job?

Yes, being a veterinarian is a science field job. Veterinarians apply scientific knowledge to diagnose and treat medical conditions in animals. Their work involves biology, anatomy, physiology, and pharmacology to provide care for various animal species.

What is scientific reason behind dreams?

Some people think that dreams are the brain trying to process events you have not had a chance to think through properly whilst awake. There are others who think there is personal significance to dreams. Most likely, if you do not assign any personal importance to your dreams you will not find any meaning in them. However if you choose to look more deeply into them you may find they have personal significance. It is hard to be strictly scientific about dreams are they are quite subjective and cannot be easily measured by anyone besides the dreamer.

How is the baby going to come out with an upside down uteris?

An upside down uterus, also known as a retroverted uterus, typically does not affect the baby's ability to come out. The uterus is designed to expand and contract during childbirth, allowing the baby to move through the birth canal. This anatomical variation should not present a barrier to a successful delivery.

What does pterotrigonia thoracica eat?

Pterotrigonia thoracica, an extinct bivalve mollusk, likely fed on microscopic organisms such as phytoplankton and detritus by filtering them from the water using its gills. Little is known about its specific feeding habits, but it is assumed to have been a filter feeder like many other bivalves.

Mid day sun depends on what?

The position of the sun at midday depends on the latitude and the time of year. In general, the sun will be directly overhead at midday at the equator twice a year during the equinoxes. At other latitudes, the angle of the sun at midday will vary throughout the year.

Which area of Canada has the greatest number of organisms at risk?

The Canadian wetlands are the most high risk area with over 70 percent of the organisms already lost. The risk is brought about by overfishing, the dumping of toxic chemicals, and construction.

How do shadows change during a day?

Shadows occur when the Earth rotates and the position of the sun appears to change. Therefore, the position of the sun's rays hit the object at different angles causing a shadow to change shape.

What mechanism could have propelled it into Outer Space?

A rocket propulsion system uses the principle of Newton's third law of motion to propel objects into outer space. By expelling high-speed exhaust gases in one direction, the rocket experiences an equal and opposite force in the opposite direction, pushing it upwards and potentially into outer space.

What is zimbabwes climate like?

Zimbabwe has a tropical climate, with distinct wet and dry seasons. The rainy season typically occurs from November to March, with the heaviest rains in December and January. Temperatures are generally warm throughout the year, with cooler temperatures in the higher elevations.

Organism that provides food for a parasite?

The organism that provides food for a parasite is known as the host. The parasite relies on the host for nutrients and a place to live. This relationship is often harmful to the host, as the parasite benefits at the host's expense.

Why are animals used for testing on instead of humans?

in my opinion i think its terrible to test on poor animals , but in a way there are two sides to it

it is obviously much better then having to test on a human, as it could harm them

but animals could get hurt too !

How fast does saturn move around the sun?

Saturn orbits the sun at an average speed of roughly 9.69 km/s.

However, if you're asking how long it takes to orbit, then the answer is 10,759.22 days or 29.4571 years.