Now we want a way to make our monsters fight!
before two monsters can fight, we need to give two new class methods that update their stats.
implement a method for "win_fight" and "lose_fight". win_fight should add 5 to the monster’s self. exp, and reset their current_hp to their max_hp. lose_fight should also reset their hp, but only adds 1 exp to self. exp.
now write a function that takes two instances of the monster class as its input and makes them "fight". a fight goes as follows:
the monster entered as the first function parameter always goes first.
each monster takes a turn using one attack move.
loop over all attacks from most powerful to least powerful attack until there is a winner. if there is a tie in hit points for an attack select using alphabetical order.
an attack is always successful, and decreases the opponent’s current_hp by the given number of points. monsters continue taking turns until one of them reaches current_hp less than or equal to 0, at which point the win_fight and lose_fight methods should be invoked. once the fight is complete, return the round number in which the fight ended, the monster that won and the list of attacks the winning monster used. if both monsters only have "wait" as an attack, return -1, none, non

Answer:

the answer is d.

explanation:

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.