Different regions of the United States have different woothor patterns. Euroka, California and Middletown, Now Jersey are both
located on a coast at about the same latitudo. The map shows the location of the cities near 40'N latitudo, which is represented
by the dashod line.
Middletown
Pacific
Ocean
Atlantic
Ocean
Eureka has an averago July tomporaturo of 17°C (63°F) Middletown has an averago July tomperature of 28'C (82°F) If wind
patterns generally move from the west toward the east, why is Eureka so much cooler than Middletown in July?
O A. Land losos its heat slower than water, so Middletown receives hotter air than Euroka throughout the yoar including
during the summer months
OB. The Pacific Ocean contains more salt than the Atlantic Ocean, so colder ocean currents from the Pacific koep
Eureka's temperature lower than in Middletown
Euoroka is much further away from the Equator than Middletown is, so the cold air from the north koops the
tomperaturos lower
Ocean water remains cooler longer than land, so air from the ocean moving east toward Euroka koops tomporatures
lower than in Middletown
436 PM

Ireally wish i could but i will do some research and when i find the answer i will come back to assist you ; )

Infrared sensor is most used sensor in wireless technology where remote controlling functions and detection of surrounding objects/ obstacles are involved. this post will discuss about what is infrared sensor, its working principle, how it works, types, applications, advantages and disadvantages. what is infrared sensor

ir sensor is a simple electronic device which emits and detects ir radiation in order to find out certain objects/obstacles in its range. some of its features are heat and motion sensing.

ir sensors use infrared radiation of wavelength between 0.75 to 1000µm which falls between visible and microwave regions of electromagnetic spectrum. ir region is not visible to human eyes. infrared spectrum is categorized into three regions based on its wavelength i.e. near infrared, mid infrared, far infrared.

wavelength regions of infrared spectrum

near ir – 0.75µm to 3 µm
mid ir – 3 µm to 6 µm
far ir – > 6 µm
1 introduction to infrared sensor

fig. 1 – introduction to infrared sensor

working principle of infrared sensor

infrared sensors works on three fundamental physics laws:

planck’s radiation law: any object whose temperature is not equal to absolute zero (0 kelvin) emits radiation.
stephan boltzmann law: the total energy emitted at all wavelengths by a black body is related to the absolute temperature.
wein’s displacement law: objects of different temperature emit spectra that peak at different wavelengths that is inversely proportional to temperature.
key elements of infrared detection system

the key elements of infrared detection system are:

ir transmitter

ir transmitter acts as source for ir radiation. according to plank’s radiation law, every object is a source of ir radiation at temp t above 0 kelvin. in most cases black body radiators, tungsten lamps, silicon carbide, infrared lasers, leds of infrared wavelength are used as sources.

transmission medium

as the name suggests, transmission medium provides passage for the radiation to reach from ir transmitter to ir receiver. vacuum, atmosphere and optical fibers are used as medium.

ir receiver

generally ir receivers are photo diode and photo transistors. they are capable of detecting infrared radiation. hence ir receiver is also called as ir detector. variety of receivers are available based on wavelength, voltage and package.

ir transmitter and receivers are selected with matching parameters. some of deciding specifications of receivers are photosensitivity or responsivity, noise equivalent power and detectivity.