Christa

=__Science Project # 4__= Paragraph Writing. Writing a paragraph telling the average person

__**Research Question:**__ How does T.V use its electromagnetic radiation?


 * __Hypothesis:__** I think that a television uses its electromagnetis radiation on creating a moving visual.

__**Info Collected:**__ FM = Frequency Waves AM = Amplitude waves Radio waves are carried for both radio and TV programs. Radio waves are made by charged particles which move back and forth inside something called **transmission antennas.** These transmission antennas send radio waves in all directions. The waves being sent out, radio waves, carry a lot of information from broadcasting stations to your radio or T.V antenna. They transmit these signals using two methods Radio stations pick one of the methods to use, but T.V stations use both AM and FM. T.V's use AM for pictures and FM for sound.
 * Amplitude Modulation
 * Frequency Modulation

**Figure 1**
Frequency Modulation is used to create the picture on this screen.

http://blog.activehome.co.uk/photos/uncategorized/samsung_led_lcd_tv_1.jpg

**Figure 2**
Amplitude Modulation appears like this as a wave, but we just hear it. http://t2.ftcdn.net/jpg/00/06/52/57/400_F_6525764_YKe1eDYFb34z8qEaOKVm8qy7A548gqL4.jpg = = =__**Science Project # 3**__=

__**Research Question**__: How does the appliance you chose (T.V) effect humans with their levels of electromagnetic radiation?

__**Hypothesis**__: High definition T.V have less effective radiation then fuzzy old T.V's.

__**Info Collected:**__ It is important for people to know that most T.V sets are not known to give off any level of radiation, there is no evidence that radiation given off from a T.V has caused a human injury. Some T.v sets have x-ray leakage, which is why FDA has the authority to ask for radiation safety data which includes x-ray leakage. Liquid Crystal Displays or Plasmas are not capable of emitting x-radiation, which means they are not public health hazards.


 * Resources**

Pasachoff, Jay M. Boston, Massachusettes: Pearson Education, 2007. 90-91. Print.