That depends on how long the moving clock keeps moving before you take it into
the lab and measure its error, and it also depends on how small an error you can
measure.
A clock flown around the world on an airplane arrives with measurable error that
corresponds to the error expected due to relativistic time dilation. Also, corrections
are routinely included in decoding the signals from GPS satellites to account for the
relativistic error in their on-board clocks due to their speed in orbit. If corrections are
not made, the error in GPS positioning is definitely noticeable.
Light can actually make dust particles more visible rather than attract them. Dust particles are naturally present in the air and can become visible when illuminated by light due to scattering. Sunlight or artificial light sources can highlight dust particles, making them more noticeable in our living spaces.
At the speed of light, time appears to stand still from the perspective of an observer. This is a concept known as time dilation in the theory of relativity.
Time dilation is a phenomenon predicted by Einstein's theory of relativity. When traveling at half the speed of light, time dilation causes time to pass more slowly for the moving object compared to a stationary observer. This means that the moving object experiences less time passing than the stationary observer, leading to a difference in the perception of time between the two frames of reference.
The concept of time dilation is not specifically mentioned in Ender's Game. However, the story does touch upon the effects of relativity due to traveling near the speed of light in some parts of the novel.
The theory of relativity explains that as a spaceship moves closer to the speed of light, time for the people on the spaceship appears to slow down compared to those on Earth. This is known as time dilation, where time passes differently for objects in motion at high speeds.
Time dilation always occurs, at ANY speed. The reason it was unknown for solong is that it doesn't become noticeable to us at any speed where we have anydaily experience. But as soon as we had atomic clocks capable of measuringinsanely tiny time differences, and began using them to look for time dilation,there it was, right in front of us, all over the place, in just the predicted amounts.
The iris in the eye dilating in low light.
Dilation of the pupil allows more light to reach the periphery of the retina by increasing the amount of light entering the eye. This is controlled by the iris muscles when lighting conditions change.
We do experience a form of time dilation in everyday life, but the effects are extremely small. Time dilation occurs due to differences in gravitational potential and velocities. In our daily lives, these differences are relatively insignificant compared to extreme situations, such as near a black hole or moving at speeds close to the speed of light, where the effects of time dilation become much more pronounced.
The visible colored part of the eye that controls pupil dilation is the iris. The iris regulates the size of the pupil in response to light conditions and helps to control the amount of light that enters the eye.
In principle, yes. But just like everything else in our daily experience of life on Earth, the effect is so small that it's completely undetectable and un-noticeable. Even the particles involved in an explosion never reach a significant fraction of the speed of light.
It is not possible for a particle with mass to reach the speed of light, as it would require infinite energy. Additionally, at speeds approaching the speed of light, relativistic effects become significant, causing time dilation and length contraction.
-- His skin or his clothing appear dark. -- Technically, his skin and his clothing become slightly warmer, but the quantity of energy involved is normally so slight that the effect is not noticeable.
They are only noticeable under black lights, unless you are looking for it and look really closely, then you can see light ink. The tattoo only last for about 6 months.
light your hair on fire
While we do not presently (with our large relative mass) have the energy to reach any speed near the speed of light, we can observe particles that are close to that speed. Time dilation has been verified using such techniques. Also, even at slow speeds, time dilation is observable, but the precision of the measurement is very tight. See http://en.wikipedia.org/wiki/Time_dilation
Light can actually make dust particles more visible rather than attract them. Dust particles are naturally present in the air and can become visible when illuminated by light due to scattering. Sunlight or artificial light sources can highlight dust particles, making them more noticeable in our living spaces.