If the light ray hits the boundary at an angle which is not perpendicular to or parallel to the surface, then it will change direction and appear to `bend'. Refraction is nicely demonstrated when you look from above at an angle at a straw in a glass of water. The straw appears bent in the liquid. This is because the light rays leaving the straw change direction when they hit the surface between the liquid and the air. Your eyes trace the light rays backwards as straight lines to the point they would have come from if they had not changed direction and as a result you see the tip of the straw as being shallower in the liquid than it really is.
The illusion is based off of the moon’s size and the objects and landscapes connected with it. When away from objects the moon then has even more of an illusion to you than normal because it has a problem with consistency of
If there are lower levels of potassium, then the resting membrane potential will be higher than normal and an action potential will be more likely with less stimulation. Less voltage will need to be used. 2. Tetrodotoxin, a toxin found in puffer fish, acts by inhibiting voltage-gated sodium channels. Eating improperly prepared puffer fish sushi can be fatal because of interference with action potential generation.
Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle. 6. A pulsar does not pulse, it emits beams of radiation that sweep around the sky as the neutron star rotates, and astronomers detect pulses when they sweep over the Earth. 11. Sometimes in binary systems, mass flows into a hot accretion disk around the neutron star and causes the emission of x rays.
Mirrors can reflect images of objects because light rays bounce off an object, travel in a straight line to a mirror, bounce off the mirror, and then travel to the eye of an observer. Refraction, the bending of light rays, occurs when light travels from one transparent substance to another. If you place a large bottle of water in front of a newsprint it makes the letters appear wider and larger, because it bends the light inward, making it appear to the eye that the light rays are coming from much wider print. Convex lenses are used in movie and slide projectors, and in eyeglasses for far-sighted people. A concave lens “caves in’ in the middle, so it is thin in the middle and thick on the outer edges.
Aquatic environments are generally split into three categories; fresh water, marine (salt water) and estuarine (a combination of salt and fresh water). The organisms that live in each of these environments have specific adaptations that allow them to respond to changes in their surrounds. Fish generally prefer either fresh water or salt water and are unable to cope with a change from one to the other. For example the cells in fresh water fish are saltier than the surrounding water, so due to osmosis (the diffusion of water through a semi-permeable membrane) water is constantly flowing into its body. For this reason fresh water fish require very efficient kidneys to remove all of the extra water, and methods of maintaining and collecting the salt lost through urination.
The attenuation of glass optical fiber is caused by two factors, absorption and scattering. Absorption occurs in several specific wavelengths called water bands due to the absorption by minute amounts of water vapor in the glass. Energy of this type of wave. 3. How is this type of wave created?
Safety and the Environment 2. Data Collection and Processing2.1. Data Collection Qualitative data: As the beetroot cylinders were each placed into the different temperature water baths, the colour of the beetroots started to dissolve into the water, i.e. colouring it. The beetroot cylinders in the warmer water baths clearly coloured the water more than the ones in the lower temperature baths, this can be seen in the big difference of absorbance between 8 °C and 85 °C water samples.
Currents are the ocean’s constant flow of water that is pushed on by either the wind or from tides that are caused by the moon’s gravitational field. Currents can occur along coasts, and sometimes only affect small areas. A longshore current is caused when waves strike the beach at an angle. The front part of the wave hits the shallow water first and slow down. Rip currents are a dangerous effect of longshore currents.
Meteorites likely traveled in space for millions of years before visiting us here on Earth. They were bathed in cosmic rays, but are not dangerous or radioactive. If your rock looks just like other Earth rocks, it probably is one. Meteorites look and feel different from the ordinary rocks around them. Recently fallen