If Only a Wave

Curated by Kristan Kennedy, curated by PARTICIPANT, INC by David Everitt Howe, originally at the request of the Portland Contemporary Art Museum

The cold wave in North America in 1936 - The cold wave in 1936 was the only cold wave in the 1930s, which seriously affected the 100th meridian in eastern United States. There is one of the coldest winter recorded in Great Plains. The lowest temperature in Malta in Montana Malta was less than -50 ° F in 4 days and the majority of Montana throughout the month of February is 20 ° lower than average in average and on February 15 North Dakota Province is -60 It reached ° F. Not recorded yet. From January 11th to February 20th, Langdon in North Dakota stayed below zero for 41 consecutive days. This is the longest period in the history of the United States other than Alaska. After the cold weather is one of the hottest summer recorded in 1936 Northwest heat wave.

The waves generate energy from the sea storm to the coastline. However, unlike a complete sine wave, a typical wave is more irregular and more complicated than a simple sine wave. Since the actual wave contains a mixture of waves with different frequencies, wave heights and directions, only stable up and down movements resemble sinusoids rather than the chaotic nature of the locally generated wind waves I will. Wave energy has more advantages than ocean wind energy because it is more predictable, less fluctuating and has a higher available energy density. Depending on the distance between the energy conversion device and the coastline, the wave energy system can be divided into coastline devices, coastal devices or offshore devices. So what is the difference between these three energy extraction devices?

Waves are vibrations in space and time that bring energy. This includes sound waves and light waves. These waves can be measured with a certain amount of energy. The wave energy is determined by two variables. One is the amplitude, the distance from the rest position of the wave to the top or bottom. Large amplitude waves contain more energy. The other is frequency, that is, the number of waves passing in one second. As more waves pass, more energy is supplied every second. In the case of electromagnetic waves like light, each individual photon in the light has frequency dependent energy.