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e Lens of the observer's eye. f Right-angled prism. g Image-erecting prism. A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position.
Pitch correction. Pitch correction is an electronic effects unit or audio software that changes the intonation (highness or lowness in pitch) of an audio signal so that all pitches will be notes from the equally tempered system (i.e., like the pitches on a piano ). Pitch correction devices do this without affecting other aspects of its sound.
The COST Hata model is a radio propagation model (i.e. path loss) that extends the urban Hata model (which in turn is based on the Okumura model) to cover a more elaborated range of frequencies (up to 2 GHz). It is the most often cited of the COST 231 models (EU funded research project ca. April 1986 – April 1996), [1] also called the Hata ...
This is a comparison of the various internal components and features of many smartphones. An evolution of mobile phones. From left to right: Motorola 8900X-2, Nokia 2146 orange 5.1, Nokia 3210, Nokia 3510, Nokia 6210, Ericsson T39, HTC Typhoon, iPhone 3G, Samsung Galaxy S4, Samsung Galaxy S4 Mini, iPhone 5s, iPhone 6 Plus
Consumer brain–computer interfaces. There are various consumer brain–computer interfaces available for sale. [1] These are devices that generally use an electroencephalography (EEG) headset to pick up EEG signals, a processor that cleans up and amplifies the signals, and converts them into desired signals, and some kind of output device. [1]
This page is a comparison of electronic design automation (EDA) software which is used today to design the near totality of electronic devices. Modern electronic devices are too complex to be designed without the help of a computer. Electronic devices may consist of integrated circuits (ICs), printed circuit boards (PCBs), field-programmable ...
A defeat device is any motor vehicle hardware, software, or design that interferes with or disables emissions controls under real-world driving conditions, even if the vehicle passes formal emissions testing. [1] [2] The term appears in the US Clean Air Act and European Union regulations, to describe anything that prevents an emissions control ...
Multiple comparisons problem. An example of coincidence produced by (uncorrected multiple comparisions) showing a correlation between the number of letters in a spelling bee's winning word and the number of people in the United States killed by venomous spiders. Given a large enough pool of variables for the same time period, it is possible to ...