# As the frequency increases so does the energy Em wave carry

• Geek007
In summary, when an electromagnetic radiation penetrate through a material, it doesn't necessarily have to induce bond breakage of the material's molecules.

#### Geek007

Hi everyone,
As we move from left to right in EM spectrum the energy EM wave carries in creases as does the Frequency. Then why even after having a lot of energy waves can't penetrate hard me trials like rock. For example, Microwave aren't that good in penetration of tough objects but have higher energy as compared to Radio waves.

When an electromagnetic radiation penetrate through a material, it doesn't necessarily have to induce bond breakage of the material's molecules. The EM radiation that can penetrate is simply not absorbed by the material. So, even a low frequency EM radiation can go through a medium which is opaque to a radiation at some higher frequency because the absorption spectrum of that medium does not have peaks around the radiation with lower frequency. A material is said to be opaque at certain frequency if it absorbs a major part of photons at that frequency. However, at some point when the intensity is very high (high photon density) like pulsed laser or focused sunlight, an opaque material can be broken in its structure due to heavy ionization or heating and the light can eventually goes through. Certainly, these two mechanisms of penetration through a material is different.

Geek007 said:
As we move from left to right in EM spectrum the energy EM wave carries in creases as does the Frequency.
That statement is not correct - in a fundamental way. The energy of an EM wave depends on the energy radiated by the source. The difference in 'Energy' refers to the energy of the Photons involved. 1kW of blue light consists of fewer higher energy photons than 1kW of red light. (The ration is about 1:2 , in that case because the frequency of blue light is about twice the frequency of rd light.
EnergyPhoton = hf

## What is the relationship between frequency and energy in an electromagnetic wave?

The energy of an electromagnetic (EM) wave is directly proportional to its frequency. This means that as the frequency increases, the energy of the wave also increases. This relationship is described by the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency.

## Why does the energy of an EM wave increase as its frequency increases?

The energy of an EM wave is determined by the amount of energy carried by each individual photon, which is directly related to the frequency of the wave. Higher frequency waves have more energy because they have a higher number of photons with higher individual energies.

## What is the significance of the relationship between frequency and energy in EM waves?

The relationship between frequency and energy in EM waves is important because it allows us to understand and study the properties of these waves. It also plays a crucial role in various applications such as communication technology and medical imaging.

## Does the energy of an EM wave always increase as its frequency increases?

Yes, the energy of an EM wave will always increase as its frequency increases. This is because the relationship between frequency and energy is constant and cannot be altered.

## How does the relationship between frequency and energy in EM waves compare to other types of waves?

The relationship between frequency and energy in EM waves is unique to this type of wave. In other types of waves, such as sound waves, the energy is not directly related to the frequency. Instead, it is determined by other factors such as the amplitude of the wave.