The OnePlus 5T ships with Android 7.1.1 "Nougat" and uses the OxygenOS user interface, OnePlus' proprietary custom skin built on top of Android, adding various features not found in the stock Android operating system, such as night mode and reading mode, which both change the color temperature of the device's screen, and the ability to change the Bluetooth audio codec. The night mode reduces the screen's color temperature to reduce blue light levels, while the reading mode applies a monochrome-like effect to the screen. Unlike the OnePlus 5, the 5T no longer overrides the performance scaling in benchmarks to max out CPU and GPU clocks in specific applications, this makes benchmarks being run on the 5T more accurate.
OnePlus promised an update to Android 8 "Oreo" (OxygenOS 5.0) in early 2018. The first beta for this version was released on 29 December 2017, but was pulled a couple days later due to issues with regards to instability that were present. OnePlus fixed the issues and reuploaded the beta version on 3 January 2018.
The first stable Android Oreo-based version of OxygenOS (OxygenOS 5.0.2) for the OnePlus 5T was released on 31 January 2018, introducing features such as Picture-in-Picture, Autofill, and Notification Dots, as well as a faster boot time. The update also introduced a redesigned Quick Settings menu, introduces a security patch for CVE-2017-13218, and updates a few system applications. The update does not contain the Treble feature for device independent system updates. On 11 March 2018, OnePlus released the Android 8.1 "Oreo" update in beta for the OnePlus 5 and the OnePlus 5T, bringing the changes made to Android 8.1 such as the Neural Networks and Shared memory APIs, the dimming of the navigation bar when it is not being used to the devices, and other improvements, such as improvements to the Autofill framework. The update also updated the security patch level to 1 February 2018. In Q2 2020 The OnePlus 5 and 5T got their stable Android 10 updates with OxygenOS
The OnePlus 5T includes only a single variant for cellular networks worldwide.
OnePlus 5T received generally positive reviews. "The Verge" was full praise for the phone's elegant design and optimized software but noted that the camera was still mediocre. Engadget heaped praise on the phone for its excellent performance despite its price bracket.
Oppo F17 Pro
The Oppo F17 Pro is a phone developed by Oppo. It is the latest phone in the Oppo F Series, a range of devices marketed towards consumers looking a mid-range phone. The phone was released in India on September 7, 2020, and later went on the market in other countries by a different name, the Oppo A93. The phone has a single configuration with a price of ₹22990, but there is also a special "Diwali Edition" version of the phone, which features a Matte Gold version of the phone, which is boxed along with a 10000mAh power bank and a "Diwali Exclusive back case cover." This special edition sells for ₹23990.
Big Rip
In physical cosmology, the Big Rip is a hypothetical cosmological model which describes the ultimate fate of the universe. According to this theory all the matter of the universe from stars and galaxies to atoms and subatomic particles, and even spacetime itself will be torn apart by the expansion of the universe at a certain time in the future, until distances between particles will become infinite. According to the standard model of cosmology the scale factor of the universe is known to be accelerating and, in the future era it will increase more rapidly. However, this expansion is similar for every moment of time (hence the exponential law – the expansion of a local volume is the same number of times over the same time interval), and is identified by an unchanging, small Hubble constant which is ignored by any bound material structures. Similarly in the Big Rip scenario the Hubble constant increases to infinity in a finite time.
The possibility of sudden rip singularity occurs only for hypothetical matter (phantom energy) but it is unlikely to occur in physical properties.
The truth of the hypothesis relies on the type of dark energy present in our universe. The type that could prove this hypothesis is a constantly increasing form of dark energy, known as phantom energy. If the dark energy in the universe increases without limit, it could destroy all forces that hold the universe together. The key value is the equation of state parameter "w", the ratio between the dark energy pressure and its energy density. If -1 < "w" < 0, the expansion of the universe continues to increase, but the dark energy tends to stop over time. So the Big Rip does not happen. Phantom energy has "w" < −1, which means that its density increases as the universe expands.
A universe with more phantom energy is an accelerating universe, expanding at an ever-increasing rate. However, this implies that the size of the observable universe and the particle horizon is continually getting smaller — the distance at which objects are moving away at the speed of light from an observer becomes ever closer, and the distance over which interactions can propagate becomes ever shorter. When the size of the particle horizon becomes smaller than any particular structure, no interaction by any of the fundamental forces can occur between the farthest parts of the structure, and the structure is "ripped apart". The progression of time itself will stop. The model says that after a finite time there will be a final singularity, called the "Big Rip", in which the observable universe will reach zero size and all distances will reach into infinite value.
The authors of this hypothesis, led by Robert R. Caldwell of Dartmouth College, calculate the time from the present to the Big Rip to be
where "w" is defined above, "H" is Hubble's constant and "Ω" is the present value of the density of all the matter in the universe.
However, observations of the galaxy cluster speeds by the Chandra X-ray Observatory seem to tell that the value of "w" is approximately −0.991, meaning the Big Rip will not happen
In their paper, the authors consider a hypothetical example with "w" = −1.5, "H" = 70 km/s/Mpc, and "Ω" = 0.3, in which case the Big Rip would happen approximately 22 billion years from the present. In this scenario, galaxies would first be separated from each other about 200 million years before the Big Rip. About 60 million years before the Big Rip, galaxies would begin to break up as small parts as gravity becomes too weak to hold them together. Planetary systems like the Solar System would become gravitationally unbound and all planets will be separated from their orbit in about three months before the Big Rip. Planets would fly off into the rapidly expanding universe. In the last minutes, stars and planets would be torn apart, and the now dispersed atoms would be destroyed about 10 seconds before the end. At the time the Big Rip occurs, even spacetime itself would be ripped apart and the scale factor would be infinity.
Evidence indicates "w" to be very close to −1 in our universe, which makes "w" the dominating term in the equation. The closer that "w" is to −1, the closer the denominator is to zero and the further the Big Rip is in the future. If "w" were exactly equal to −1, the Big Rip could not happen, regardless of the values of "H" or "Ω".
According to the latest cosmological data available, it is still unsure which one is correct, "w" < −1, "w" = −1, and "w" > −1.
Hymn to Liberty
The Hymn to Liberty is a poem written by the Greek poet Dionysios Solomos. The poem is used as the national anthem of the counties of Greece and the Republic of Cyprus.
Ivan VI of Russia
Ivan VI Antonovich (Iván VI; Ioánn Antónovich; ; – ) was Tsar of Russia from 1740 to 1741 until he was removed from the position.
He was murdered in July 1764.
Gagauzia Radio Television