- #1
shankar
- 17
- 1
why do our body don't feel the EM waves.
Our Body and EM Waves: Explaining the Response
In summary, the article proposes that the smell of something is a function of its vibrational spectra and not its structure. EM waves do not have vibrational spectra and therefore cannot produce the smell of something.
- #2
maximus
- 495
- 4
you're asking a loaded question. our bodies do feel some waveleangths of EM waves. such as radiated heat (or infarred). and have you ever focused light through a magifying glass on to your skin? you're feeling light there too.
- #3
shankar
- 17
- 1
ya when concentrated light falls on the skil we feel it.
i have asked this question to some of my friends but all explained with u r answer "light ". my point is can we feel the microwave (ie not in the form of heat) but like antennas do. it may feel so odd but still i have dought that how do antenna (Al-alum)fell the microwave any my not our body. we call it so sensitive but y it don't fell the EM in the air.
[?]
i have asked this question to some of my friends but all explained with u r answer "light ". my point is can we feel the microwave (ie not in the form of heat) but like antennas do. it may feel so odd but still i have dought that how do antenna (Al-alum)fell the microwave any my not our body. we call it so sensitive but y it don't fell the EM in the air.
[?]
- #4
MasterBlaster
Shankar - Learn how to properly convey your message in the language of this forum.
- #5
shankar
- 17
- 1
language ??
u can understand my problen right.
- #6
einsteinian77
- 208
- 0
We can feel curtain EM waves because its more of an evolutionary factor really. If we receive to much EM waves in the form of radiated heat it will have a harmful effect on us such as burns and the destruction of your body. While other EM waves are not as potent to you, therefore, we don't necessarily need to feel them.
- #7
teddy
- 18
- 0
'feel' means percievable by one out of our five senses.
smelling EM waves is certainly out because the olfactory sensors usually respond to only things that have mass.
tasting EM waves is also out for similar reasons
hearing them is out because the pressure fluctuations they generate in the atmosphere by photonic collisions with the atoms is extremely low to be 'heard'
seeing is in but due to evolutionary reasons our sight is sensitive to only certain spectra (yes,I am referring to wein's law and sun being 5000 K though some people DO have objections to the reason behind this selective sensitivity).
now comes the most vast and touchy sense: the touch.
we feel that someone is touching us only if there is some local deformation of our skin or some chemical reactions(say due to heat) are triggered.Only those photons are responsible for such chemical reactions whose energy matches the vibrational/rotational of the molecules of our skin and infrared does the best.Higher frequency EM like x-rays do not excite the atoms genrally, it ionizes it(still another chemical reaction though).
Microwaves have smaller energy per quanta,but large exposure may be dangerous.Anyway,percieving it is not possible(though you may percieve its hazards
) .
smelling EM waves is certainly out because the olfactory sensors usually respond to only things that have mass.
tasting EM waves is also out for similar reasons
hearing them is out because the pressure fluctuations they generate in the atmosphere by photonic collisions with the atoms is extremely low to be 'heard'
seeing is in but due to evolutionary reasons our sight is sensitive to only certain spectra (yes,I am referring to wein's law and sun being 5000 K though some people DO have objections to the reason behind this selective sensitivity).
now comes the most vast and touchy sense: the touch.
we feel that someone is touching us only if there is some local deformation of our skin or some chemical reactions(say due to heat) are triggered.Only those photons are responsible for such chemical reactions whose energy matches the vibrational/rotational of the molecules of our skin and infrared does the best.Higher frequency EM like x-rays do not excite the atoms genrally, it ionizes it(still another chemical reaction though).
Microwaves have smaller energy per quanta,but large exposure may be dangerous.Anyway,percieving it is not possible(though you may percieve its hazards
) .- #8
subtillioN
http://www.physiol.ucl.ac.uk/research/turin_l/chemical_senses_complete.pdf
A spectroscopic mechanism for primary olfactory reception
Abstract
A novel theory of primary olfactory reception is described. It proposes that olfactory receptors respond not to the shape of the molecules but to their vibrations. It differs from previous vibrational theories (Dyson, Wright) in providing a detailed and plausible mechanism for biological transduction of molecular vibrations: inelastic electron tunnelling. Elements of the tunnelling spectroscope are identified in putative olfactory receptor and their associated G-protein. Means of calculating electon tunnelling spectra of odorant molecules are described. Several examples are given of correlations between tunnelling spectrum and odour in structurally unrelated molecules. As predicted, molecules of very similar shape but differing in vibrations smell different. The most striking instance is that of pure acetophenone and its fully deuterated analogue acetophenone-d8, which smell different despite being identical in structure. This fact cannot, it seems, be explained by structure-based theories of odour. The evidence presented here suggests instead that olfaction, like colour vision and hearing, is a spectral sense.
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- #9
teddy
- 18
- 0
thanks for the inetresting article.
But I am wondering whether this applies to excitation by EM waves.
Consider this and don't shy from bullying me if i am wrong :
The article says that the smell is a function of vibrational spectra and not structure but this vibration spectra pertains to the molecules of the object we are smelling and EM waves are not some sort of molecule.Yes,there is spectra of EM waves but the analogy ends there.When we say that microvaves and infrared have different frequencies we do not mean that they vibrate in different ways(whatever that means).
But still one idea the article does suggests is this:
Suppose the molecules of a object (say, wine) responds to different frequencies of EM in different vibrational modes.Then the wine will smell different in different kinds of EM waves that surrounds it at some particular instant.Sounds cool
But I am wondering whether this applies to excitation by EM waves.
Consider this and don't shy from bullying me if i am wrong
:The article says that the smell is a function of vibrational spectra and not structure but this vibration spectra pertains to the molecules of the object we are smelling and EM waves are not some sort of molecule.Yes,there is spectra of EM waves but the analogy ends there.When we say that microvaves and infrared have different frequencies we do not mean that they vibrate in different ways(whatever that means).
But still one idea the article does suggests is this:
Suppose the molecules of a object (say, wine) responds to different frequencies of EM in different vibrational modes.Then the wine will smell different in different kinds of EM waves that surrounds it at some particular instant.Sounds cool
1. What is the response of our body to EM waves?
The response of our body to EM waves varies depending on the frequency and intensity of the waves. Generally, our body responds to EM waves by absorbing them, reflecting them, or allowing them to pass through.
2. How does our body absorb EM waves?
Our body absorbs EM waves through various mechanisms such as through the skin, tissues, and organs. The absorption of EM waves can also vary depending on the type of tissue, with some tissues being more sensitive to certain frequencies of EM waves.
3. Can EM waves affect our health?
Yes, EM waves can affect our health. Exposure to high levels of EM waves can lead to adverse health effects such as skin burns, eye damage, and even cancer. However, the level of risk depends on the frequency and intensity of the waves, as well as the duration of exposure.
4. How do EM waves interact with our body's cells?
EM waves can interact with our body's cells in several ways. They can cause changes in the electrical charges of the cell membrane, alter cell communication and metabolism, and even cause DNA damage. These interactions can lead to various physiological responses in the body.
5. Are there any safety guidelines for EM wave exposure?
Yes, there are safety guidelines for EM wave exposure set by international organizations such as the International Commission on Non-Ionizing Radiation Protection (ICNIRP). These guidelines aim to protect individuals from the potential health effects of EM waves by setting exposure limits for different frequencies and sources.
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