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What would be used for a wave that has the wavelength of about the size of a molecule of water?
Answer 1:

A water molecule has a diameter of 0.275 nanometers, or 2.75 × 10-10 meters. This wavelength falls in the X ray part of the electomagnetic spectrum. These waves can be generated using a vacuum tube, in which electrons are forced from a cathode at high speeds to collide with a metal target. Thanks to the photoelectric effect, a high-energy photon is released from the metal with the appropriate energy (wavelength).

Answer 2:

X-rays have a similar wavelength to the size of a water molecule. Because X-rays are about the same size as atoms, they are often used to determine the position or arrangement of atoms in solids.

Answer 3:

The size of a water molecule is about .1 nanometers, or 10-10 meters. So to figure out which type of electromagnetic wave has a wavelength about that size, we can look at an electromagnetic spectrum chart. Looking at such a chart, we find that Xrays have wavelengths about this size.

Answer 4:

Well, the size of a water molecule is around 0.3 nanometers (that's 0.0000000003 meters!). It turns out that this is in the X-ray region of the electromagnetic spectrum, so you'd need X- rays if you wanted electromagnetic waves with a wavelength the size of a water molecule.

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