The Reconstruction Finance Corporation (RFC) was established during the Hoover administration with the primary objective of providing liquidity to, and restoring confidence in the banking system. The banking system experienced extensive pressure during the economic contraction of 1929-1933.
Typical materials used for electromagnetic shielding include sheet metal, metal screen, and metal foam. Any holes in the shield or mesh must be significantly smaller than the wavelength of the radiation that is being kept out, or the enclosure will not effectively approximate an unbroken conducting surface.
c. Electromagnetic waves can travel through empty space; mechanical waves can't d. Electromagnetic waves are long chains of vibrating molecules; mechanical waves aren't 7. Which of the following are electromagnetic waves? a. Water waves b. Radio waves c. Sound waves d. Seismic waves 8. What type of waves carry energy at a right angle to the direction of the energy flow? a. Compression waves b. Transverse waves c. Sound waves d. P-waves 9. How is wavelength measured? a. b. c. d. 10. What can you infer about a wave with a short wavelength? a. It has a low amplitude b.