ELECTROMAGNETIC FINAL POWERPOINT 123.pptx

ELECTROMAGNETIC

1. Practical Applications and Effects of Electromagnetic Waves

2. Practical Applications and Effects of Electromagnetic Waves OBJECTIVES: Cite examples of practical applications of the different regions of EM waves, such as the use of radio waves in telecommunication; and Explain the effects of electromagnetic radiation on living things and the environment

3. Practical Applications and Effects of Electromagnetic Waves

4. Practical Applications: RADIO WAVES  Radio/Television Signals  Radio waves have the highest wavelength radio waves that are produced by making electrons vibrate

5.  Global Positioning System (GPS) provides geographical position and time information anywhere on or near the Earth

6.  Magnetic Resonance Imaging(MRI) commonly found in hospitals and its used to look at organs and structures inside your body

7. MICROWAVES  Satellite It can penetrate the Earth’s atmosphere signals are transmitted by an antenna to a satellite which amplifies and retransmits the signal to an antenna in other parts of the world

8. ● Terrestrial communication A cell phone is a radio transmitter and receiver that uses microwaves.

9. ● Cooking Penetrate and agitate the water molecules within the food. Thus, they create molecular friction which produces heat that will cook the food.

10. ● Radar Radio Detection and Ranging is a detection system used to determine the range, angle or velocity of objects used to detect aircraft, ships, and the like

11.  Satellite ● Terrestrial communication ● Cooking ● Radar

12. INFRARED ● Remote Controls It uses LED lights to transmit signals to control devices and as it transmits signals, it emits pulses of invisible infrared light

13. INFRARED ● Thermal Imaging are used to show the temperature variation of the body The differences in color determine the differences in temperature

14. INFRARED ● Night vision goggles used to capture the infrared light being emitted as heat by objects in the field of view

15. VISIBLE LIGHT It enables us to see things around us Gives light to the screen of most electronic devices

16. ●Optical fibers A flexible tube with tiny camera that is used to observe the internal parts of the body . VISIBLE LIGHT

17. ● Ultraviolet B (UVB) radiation In sunlight interact with a protein (7-DHC) in the skin, converting it into vitamin D3, the active form of vitamin D, which is essential for maintaining healthy bones and teeth ULTRAVIOLET

18. ● Security Markings ULTRAVIOLET

19. ● Sterilization of water in drinking fountains ULTRAVIOLET

20. ● Fluorescence ULTRAVIOLET

21. X-RAY ● Diagnosing Bone Fracture ● Airport Security Scanner Long Wavelength X-rays Short Wavelength X-rays

22. X-RAY

23. GAMMA RAY ● Treat tumors and cancer ( Radiotheraphy ) ● Sterilize Surgical Instruments

24. 1. Radio/Television signals, GPS and MRI are practical applications of _______________( radio wave / microwave ). (BENDOZA) 2.Satellite communication, cooking, terrestrial communication, and RADAR make use of ____________ (infrared/microwave). (BONINA)

25. 3. Remote controls, thermal imaging and night vision goggles are practical application of __________(infrared/ultraviolet). (MAYOMIS) 4. ____________ (gamma rays/visible light) which is also used in optical fibers , artificial lights and screens of electronic devices.

26. 5. Vitamin D is produced from _________ (ultraviolet/microwave), which is also used for security markings and sterilization of water in drinking fountains. (NITRON) 6. In diagnosing bone fracture, we use ______________ (gamma rays/X-rays).

27. 7. Treating tumors and cancer through the process called radiotheraphy and sterilizing medical equipment are practical applications of ________________ (gamma rays/ ultraviolet). 8. The effect of Electromagnetic waves on organisms and environment depends on how much ___________ (wavelength/energy)