Understanding Electromagnetic Radiation
Electromagnetic radiation consists of waves of electric and magnetic energy moving together (i.e., radiating) through space at the speed of light. Taken together, all forms of electromagnetic energy are referred to as the electromagnetic "spectrum." Radio waves and microwaves emitted by transmitting antennas are one form of electromagnetic energy. They are collectively referred to as "radiofrequency" or "RF" energy or radiation. Note that the term "radiation" does not mean "radioactive." Often, the terms "electromagnetic field" or "radiofrequency field" may be used to indicate the presence of electromagnetic or RF energy.
Characteristics of RF Waves
The RF waves emanating from an antenna are generated by the movement of electrical charges in the antenna. Electromagnetic waves can be characterized by a wavelength and a frequency. The wavelength is the distance covered by one complete cycle of the electromagnetic wave, while the frequency is the number of electromagnetic waves passing a given point in one second. The frequency of an RF signal is usually expressed in terms of a unit called the "hertz" (abbreviated "Hz"). One Hz equals one cycle per second. One megahertz ("MHz") equals one million cycles per second.
Different forms of electromagnetic energy are categorized by their wavelengths and frequencies.
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From United States, Fpo
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510Electromagnetic radiation consists of waves of electric and magnetic energy moving together (i.e., radiating) through space at the speed of light. Taken together, all forms of electromagnetic energy are referred to as the electromagnetic "spectrum." Radio waves and microwaves emitted by transmitting antennas are one form of electromagnetic energy. They are collectively referred to as "radiofrequency" or "RF" energy or radiation. Note that the term "radiation" does not mean "radioactive." Often, the terms "electromagnetic field" or "radiofrequency field" may be used to indicate the presence of electromagnetic or RF energy.
Characteristics of RF Waves
The RF waves emanating from an antenna are generated by the movement of electrical charges in the antenna. Electromagnetic waves can be characterized by a wavelength and a frequency. The wavelength is the distance covered by one complete cycle of the electromagnetic wave, while the frequency is the number of electromagnetic waves passing a given point in one second. The frequency of an RF signal is usually expressed in terms of a unit called the "hertz" (abbreviated "Hz"). One Hz equals one cycle per second. One megahertz ("MHz") equals one million cycles per second.
Different forms of electromagnetic energy are categorized by their wavelengths and frequencies.
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From United States, Fpo
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I have read your thread regarding Radio Frequency Hazard on Detonator, as the detonator is used to initiate explosives of cap-sensitive type. Regarding your attachment RF hazard with electronic detonator.PDF, as per my knowledge, it should be Electrical detonator, not Electronic detonator. An electronic detonator can only be initiated by a Microprocessor chip, so it is not possible to initiate an electronic detonator by RF waves, lightning storms, or static electricity, making it very safe to handle. That's why the chances of premature blasting could be avoided by using an electronic detonator to initiate explosives in blasting.
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vallibasha.
From India, Hubli
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Thanks with Regards,
vallibasha.
From India, Hubli
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Welcome back to our forum after a very long break. We have seen your updates on our thread. It's really a good catch, Mr. Vallibasha. I am aware that I don't have much knowledge in electronics/electricals; I just shared what I came across on the web. Thanks for your input at the right time.
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From United States, Fpo
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Regards.
From United States, Fpo
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Dear Raghuvaran Chakravarty sir, thanks for your reply. Anyway, as per my knowledge, no safety personnel is perfect in all fields like electrical, electronics, handling of explosives, etc. Thanks to Mr. Bhaskar for valuable inputs and innovation technology used by antisocial elements for triggering explosives. But what I feel is blasting technology is also a vast subject. In that, being a safety person, one should learn different hazards associated and their control measures. That's the reason our Chakravarthy sir posted a thread regarding radio frequency hazards. If involved near the blasting site/vicinity, there are chances of initiation of detonator, leading to premature blasting, and as a result, people involved in this activity may lose their lives. It is not a matter of how old technology is, but to assess the hazards and take precautionary measures to prevent untoward accidents.
Thanks with regards,
Valli Basha Sab.
From India, Hubli
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Thanks with regards,
Valli Basha Sab.
From India, Hubli
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