how big is a nanometer?
micrometer?
angstrometer?
mega meter?
thantks
http://dictionary.reference.com/browse/nanometer
You'll find the other words in that dictionary, also.
1meter=1X10^-9 nanometers
1meter=1X10^-6 micrometers
1meter=1X10^-10 Angstrom
1meter=1X10^6 MegaMeter
A nanometer (nm) is a unit of length equal to one billionth of a meter. To visualize this, you can start by thinking about the size of a meter, which is about the height of a door or the length of a small car. Then, imagine dividing that meter into one billion equal parts, and each of those parts would be one nanometer in length. This unit is commonly used to measure things like individual atoms and molecules, as well as the wavelengths of visible light.
A micrometer (µm), also known as a micron, is a unit of length equal to one millionth of a meter. You can think of a micrometer as being one thousand times smaller than a millimeter, which is the distance between the smallest markings on a ruler. Micrometers are often used to measure the width of a human hair, the thickness of a cell membrane, or the size of some microorganisms.
An angstrom (Å) is a unit of length equal to one ten-billionth of a meter. It is commonly used in scientific fields, particularly in the study of atoms, molecules, and the wavelength of light. To give you an idea of its size, one angstrom is roughly equal to the diameter of a hydrogen atom. While not commonly used in everyday life, it proves to be a useful unit at the atomic and molecular level.
A megameter (Mm) is a unit of length equal to one million meters. It is quite large and is typically used to describe distances on a planetary or astronomical scale. For example, the distance from Earth to the Moon is approximately 384,400 kilometers or 384.4 thousand kilometers, which can also be expressed as 0.3844 megameters.
In summary:
- Nanometer (nm): One billionth of a meter, used to measure atoms and molecules.
- Micrometer (µm): One millionth of a meter, used to measure small objects like human hair and microorganisms.
- Angstrom (Å): One ten-billionth of a meter, used in atomic and molecular studies.
- Megameter (Mm): One million meters, used for large distances like those found in astronomy.