How is your cell phone call transmitted

Reference no: EM133204651

Problem: Electromagnetic Spectrum Astronomy

Part I

Electromagnetic Spectrum:

I want you to determine and then make a detailed list of at least 10 uses of electromagnetic waves (EM) that you use. Included on your list the frequencies and historically when these uses were first started. Think carefully, because there may be hidden uses that you are not immediately aware of.

1. Hint go study your radio dial.
2. How is your cell phone call transmitted?
3. List the approximate years that your identified EM waves have been in use.

Part II

Suppose astronomers wanted to send a message to an alien civilization that is living on a planet with an atmosphere very similar to that of Earth's. The message must travel through space, make it through the other planets atmosphere and be noticed by the residents of that planet. Discuss with your classmates what wavelengths of the electromagnetic radiation spectrum might be best for sending the message and why? Note that the US congress and the astrophysicist Steven Hawking has in the past warned scientists not to send any messages and reveal our presence to a possible hostile entity in the universe. Find out if we are sending messages into space and then discuss your opinion with your classmates.

Reference no: EM133204651

Questions Cloud

What constellation is almost directly opposite the ecliptic : Place the sun on today's date. What constellation is almost directly opposite the ecliptic? What time of night is this constellation at its highest point?

Differentiation strategy and abest-cost strategy : How would you characterize Stihl's competitive strategy? Should it be classified as low-cost provider strategy? A differentiation strategy? Abest-cost strategy?

Interpret different types of construction information : Interpret different types of construction information in order to explain a construction project and Assess ways in which construction professionals collaborate

How would you characterize best buy competitive strategy : How would you characterize Best Buy's competitive strategy? Should it be classified as a low-cost provider strategy? A differentiation strategy?

How is your cell phone call transmitted : AST 131 Dutchess Community College. How is your cell phone call transmitted? List the approximate years that your identified EM waves have been in use.

Personal values and personal model of servant leadership : How could your personal values and personal model of servant leadership influence individual and group behavior?

Write an essay describing social reactions to the discovery : anth 102 The College of Southern Nevada. Write an essay describing social reactions to the discovery of evolution by natural selection.

What type of performance appraisal do you believe : Q1. What type of performance appraisal do you believe should be used and why? Q2. Should merit be used or should it be seniority or longevity? Why?

Explain what processes of natural and sexual selection are : Explain what the processes of natural and sexual selection are. Provide examples. Explain how and why our ancestors became bipedal.

User Account

All Pages