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IPad (8th Generation)
The iPad 10.2-inch (officially iPad (8th generation)) is a tablet computer developed and marketed by Apple Inc. as the successor to the 7th-generation iPad. It was announced on September 15, 2020 and released on September 18, 2020. Features The eighth-generation iPad uses the same design as the seventh-generation iPad, with a 10.2-inch screen with 1620 by 2160 pixels at a pixel density of 264-pixel PPI, Touch ID support, and compatibility with the Smart Connector. It uses the Apple A12 Bionic chip, which Apple claims provides a 40% faster 6-core CPU and a 2x faster 4 core GPU compared to the processor of the previous generation. It is the first iPad tablet that includes a Neural Engine, a component introduced with the A11 processor. It is the final iPad tablet available with white bezels on the Silver and Gold models; all iPad (9th generation) tablets come with black bezels. The eighth-generation iPad is compatible with the first-generation Apple Pencil, the Smart Keyboa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPad (6th Generation)
The iPad 9.7-inch (officially iPad (6th generation)) is a tablet computer designed, developed, and marketed by Apple Inc. It was announced on March 27, 2018, during an education-focused event at Lane Tech High School in Chicago and is the successor to the 5th generation, upgraded with the Apple A10 Fusion SoC and support for styluses such as Apple Pencil. The iPad is also marketed towards educators and schools. It was replaced in September 2019, by the seventh-generation iPad. This is the last iPad to have the original 9.7 inch display. Specifications The iPad shipped with iOS 11.3, and had the iWork suite of apps preinstalled and included Apple Pencil stylus support. The iPad's hardware is nearly identical to the previous generation, except for a few upgrades, such as Apple Pencil and stylus support and an upgraded processor, the Apple A10 Fusion. It is available in three colors: Silver, Space Gray, and a new Gold color to match the updated color introduced with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-key Lighting
Low-key lighting is a style of lighting for photography, film or television. It is a necessary element in creating a chiaroscuro effect. Traditional photographic lighting ( three-point lighting) uses a key light, a fill light and a back light for illumination. Low-key lighting often uses only a key light, optionally controlled with a fill light or a simple reflector. Low key light accentuates the contours of the subject by throwing areas into shade while a fill light or reflector may illuminate the shadow areas to control contrast. The relative strength of key-to-fill, known as the lighting ratio, can be measured using a light meter. Low key lighting has a higher lighting ratio, e.g., 8:1, than high-key lighting, which can approach 1:1. The term "low key" is also used in cinematography and photography to refer to any scene with a high lighting ratio, especially if there is a predominance of shadowy areas. It tends to heighten the sense of alienation felt by the viewer, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPad Mini (5th Generation)
The fifth-generation iPad Mini (stylized and marketed as iPad mini and colloquially referred to as iPad Mini 5) is a tablet computer in the iPad Mini line, designed, developed and marketed by Apple Inc. Announced in a press release along with the third-generation iPad Air on March 18, 2019 and released the same day, it was the first iPad Mini that was released without a live press event. Its predecessor, the iPad Mini 4, was discontinued on the same day. It shares a similar design to the iPad Mini 4 and features the Apple A12 Bionic chip, 64 or 256GB storage, a more modernly upgraded 7.9-inch Retina Display with support for Apple Pencil (1st Generation), True Tone display and Bluetooth 5.0. iFixit's teardown shows this iPad Mini is equipped with an upgraded 3GB of LPDDR4X RAM, the same as the iPhone XR. The iPad Mini 5 is the final model with a home button, which has been present on all models since the original in November 2012. The iPad Mini 5 was discontinued on Septem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPad Air (3rd Generation)
The iPad Air (3rd generation) (colloquially referred to as iPad Air 3) is a tablet computer developed, and marketed by Apple Inc. It was announced and released on March 18, 2019, alongside the 5th-generation iPad Mini. Its case design is identical to the iPad Pro 10.5 inch; internal hardware includes an upgraded Apple A12 Bionic SoC, a 10.5-inch Retina Display, 3GB of LPDDR4X memory, and support for Bluetooth 5.0 and Apple Pencil (first generation). It was discontinued on September 15, 2020, following the introduction of the iPad Air (4th generation). Features Hardware The third-generation iPad Air features an upgraded, 7MP front camera (used first in the iPhone 7 and up to the iPhone XS), compared to the 1.2MP camera found in the previous generation. However, it retains the same, older 8MP rear camera which cannot record in 4K video as such. The third-generation iPad Air has a 2.49GHz six-core processor, the Apple A12 Bionic chip. That chip has a 66% faster ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPad (7th Generation)
The iPad 10.2-inch (officially iPad (7th generation)) is a tablet computer developed and marketed by Apple Inc. It features a 10.2-inch Retina display and is powered by the Apple A10 Fusion processor. It is the successor to the 9.7-inch 6th-generation iPad. The device was revealed on September 10, 2019, and released on September 25, 2019. It has support for the first generation Apple Pencil and has a smart keyboard connector. It is targeted towards the budget and educational markets. Unlike previous iPad models, which have a 9.7-inch display, the device is the first in the entry-level iPad lineup to feature a larger 10.2-inch display size. Its successor, the eighth-generation iPad, was revealed on September 15, 2020, and it has replaced this iPad. History Rumors centering around a successor to the 2018 iPad began to surface in the first half of 2019, when seven iPad models were registered on the Eurasian Economic Commission, a database known for providing hints about up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IR Filter
Infrared cut-off filters, sometimes called IR filters or heat-absorbing filters, are designed to reflect or block near-infrared wavelengths while passing visible light. They are often used in devices with bright incandescent light bulbs (such as slide and overhead projectors) to prevent unwanted heating. There are also filters which are used in solid state ( CCD or CMOS) video cameras to block IR due to the high sensitivity of many camera sensors to near-infrared light. These filters typically have a blue hue to them as they also sometimes block some of the light from the longer red wavelengths. IR transmitting/passing filters in photography In contrast to the naming convention of optical filters where the name of the filter denotes the wavelengths that are blocked, and in line with the convention for air filters and oil filters, photographic filters are named for the color of light they ''pass''. Thus a blue filter makes the picture look blue. A ''blue filter'' marginally a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISight
iSight is a brand name used by Apple Inc. to refer to cameras on various devices. The name was originally used for the external iSight webcam, which retailed for US$149, connected to a computer via a FireWire cable, and came with a set of mounts to place it atop any then current Apple display, laptop computer, all-in-one desktop computer, or flat surface. Apple introduced iSight at the 2003 Worldwide Developers Conference, and It was intended to be used with iChat AV, Apple's video-conferencing client. iMovie (version 4 and later) could also be used to capture video from the device. In April 2005, Apple released a firmware update for the iSight to improve audio performance. As of October 13, 2008, the external iSight was no longer for sale in the Apple online store or in retail locations. Meanwhile, Apple began using the term to refer to the camera built into Apple's iMac, MacBook, MacBook Air, and MacBook Pro computers, Thunderbolt Display, and Cinema Display. In Nove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barometer
A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries. Barometers and pressure altimeters (the most basic and common type of altimeter) are essentially the same instrument, but used for different purposes. An altimeter is intended to be used at different levels matching the corresponding atmospheric pressure to the altitude, while a barometer is kept at the same level and measures subtle pressure changes caused by weather and elements of weather. The average atmospheric pressure on the earth's surface varies between 940 and 1040 hPa (mbar). The average atmospheric pressure at sea level is 1013 hPa (mbar). Etymology The word '' barometer'' is derived from the Ancient Greek (), meaning "weight", and (), meaning "me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fingerprint Reader
Fingerprint scanners are security systems of biometrics. They are used in police stations, security industries, smartphones, and other mobile devices. Function Everyone has patterns of friction ridges on their fingers, and it is this pattern that is called the fingerprint. Fingerprints are uniquely detailed, durable over an individual's lifetime, and difficult to alter. Because there are countless combinations, fingerprints have become an ideal means of identification. Types of fingerprint scanners There are four types of fingerprint scanners: optical scanners, capacitance scanners, ultrasonic scanners, and thermal scanners. The basic function of every type of scanner is to obtain an image of a person's fingerprint and find a match for it in its database. The measure of the fingerprint image quality is in dots per inch (DPI). # Optical scanners take a visual image of the fingerprint using a digital camera. # Capacitive or CMOS scanners use capacitors and thus electrical current ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Touch ID
Touch ID is an electronic fingerprint recognition feature designed and released by Apple Inc. that allows users to unlock devices, make purchases in the various Apple digital media stores (iTunes Store, App Store, and Apple Books Store), and authenticate Apple Pay online or in apps. It can also be used to lock and unlock password-protected notes on iPhone and iPad. Touch ID was first introduced in iPhones with 2013's iPhone 5S, In 2015, Apple introduced a faster second-generation Touch ID in the iPhone 6S; a year later in 2016, it made its laptop debut in the MacBook Pro integrated on the right side of the Touch Bar. Touch ID has been used on all iPads since the iPad Air 2 was introduced in 2014. In MacBooks, each user account can have up to three fingerprints, and a total of five fingerprints across the system. Fingerprint information is stored locally in a secure enclave on the Apple A7 and later chips, not in the cloud, a design choice intended to secure fingerprint inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microphone
A microphone, colloquially called a mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public events, motion picture production, live and recorded audio engineering, sound recording, two-way radios, megaphones, and radio and television broadcasting. They are also used in computers for recording voice, speech recognition, VoIP, and for other purposes such as ultrasonic sensors or knock sensors. Several types of microphone are used today, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal. The most common are the dynamic microphone, which uses a coil of wire suspended in a magnetic field; the condenser microphone, which uses the vibrating diaphragm as a capacitor plate; and the contact microphone, which uses a crystal of piezoelectric material. Microphones typi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compass
A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north. Other methods may be used, including gyroscopes, magnetometers, and GPS receivers. Compasses often show angles in degrees: north corresponds to 0°, and the angles increase clockwise, so east is 90°, south is 180°, and west is 270°. These numbers allow the compass to show azimuths or bearings which are commonly stated in degrees. If local variation between magnetic north and true north is known, then direction of magnetic north also gives direction of true north. Among the Four Great Inventions, the magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since c. 206 BC), Li Shu-hua, p. 176 and later adopted for navigation by the Song Dynasty Chinese during the 11th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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