1 million 400 nd 29
about £200-£400 is my guess
A lens with lower aperture would be great, something less than F2.8 would give you more light to the subject, ISO should be around 400-1600 ( mid range- high range camera) , keep the shutter speed around 1/200-1/20, if you have tripod you can go for lower shutter speed.
The content of the picture and what "Quality" level you are using affects how many pictures a memory card will hold. A 2 GB card in a 7.2 MP camera will hold something like 800 pictures on medium quality and 400 pictures on high quality.
I have a Canon Ixus 400 and have been using a 1GB Integral memory card on it for years - works absolutely fine!
The wave length of visible light ranges from 400 nm to 700 nm
"Wave speed" is meaningless. Do you mean wavelength? That's roughly 400-700 nm.
Just ONE property, the wavelength of the light. The colour of visible light depends on its wavelength. These wavelengths range from 700 nm at the red end of the spectrum to 400 nm at the violet end.
400 to 800 nanometers (0.0000004 to 0.0000008 meters)
The wavelength of visible light is approximately between 400 and 700 nm; if you divide the speed of light by that value, you will get the corresponding frequencies.
Light exhibits the qualities of both a particle and a wave. Wave-particle duality is a fundamental concept of quantum mechanics, and it is used to assist in explaining the nature of, in this case, light. Light does, indeed, exhibit both the qualities of a particle and those of a wave. And why is light a wave? Because it is. It is a wave because being a wave is an integral part of its fundamental nature. We cannot separate the wave characteristic from light and still have light. Light behaves like a wave, and that is why it is a wave. Perhaps it might be more helpful to say light behaves as it does, and "wave" is the word we use to describe its behavior. Perhaps that perspective, the view that light does its thing and we call what it does a wave, will make it easier to understand and accept that light is a wave. A couple of links are provided to related articles posted by our friends at Wikipedia, where knowledge is free.
Visible light waves are electromagnetic waves, within a certain range of frequencies. The wavelength of visible light is between about 400 and 700 nm. Some of the characteristics of electromagnetic waves include:* Carried by particles called photons* The wave is a wave in the electric and magnetic fields* In a vacuum, this wave (and the photons) propagates at the so-called speed of light, which is about 300 million meters/second.
Visible light waves are electromagnetic waves, within a certain range of frequencies. The wavelength of visible light is between about 400 and 700 nm. Some of the characteristics of electromagnetic waves include:* Carried by particles called photons* The wave is a wave in the electric and magnetic fields* In a vacuum, this wave (and the photons) propagates at the so-called speed of light, which is about 300 million meters/second.
7.5*
Light and other electromagnetic waves do indeed travel as a wave. For that reason, light, radio waves and all other electromagnetic waves can be characterized by a wavelength. Different colors of light have different wavelengths in the range of around 400 nanometers to 800 nanometers. However, they can also be considered to be particles instead of waves. In some branches of physics, the concept of light as a particle can be very useful. For most of us, treating light as a wave is quite sufficient.
No. The higher the frequency of a wave, the higher the energy.
Since white light is emitted from an incandescent bulb, it contains all wavelengths in the visible light spectrum between 400 to 700nm. It also emits wavelengths in the infrared region.