搜尋結果
TSMC was founded in Taiwan in 1987 by Morris Chang as the world's first dedicated semiconductor foundry. It has long been the leading company in its field. [15] [16] When Chang retired in 2018, after 31 years of TSMC leadership, Mark Liu became chairman and C. C. Wei became Chief Executive.
- 73,090 (2022)
- US$73.67 billion (2022)
J. Robert Oppenheimer (born Julius Robert Oppenheimer; / ˈɒpənhaɪmər / OP-ən-hy-mər; April 22, 1904 – February 18, 1967) was an American theoretical physicist. He was director of the Manhattan Project 's Los Alamos Laboratory during World War II and is often called the "father of the atomic bomb ". Born in New York City, Oppenheimer ...
- Definition
- History
- Practical Examples
- Multiples
- Conversions
- Newton-metre and Torque
- Watt-Second
In terms of SI base units and in terms of SI derived units with special names, the joule is defined as One joule can also be defined by any of the following:[citation needed] 1. The work required to move an electric charge of one coulomb through an electrical potential differenceof one volt, or one coulomb-volt (C⋅V). This relationship can be used ...
The cgs system had been declared official in 1881, at the first International Electrical Congress.The erg was adopted as its unit of energy in 1882. Wilhelm Siemens, in his inauguration speech as chairman of the British Association for the Advancement of Science (23 August 1882) first proposed the Joule as unit of heat, to be derived from the elect...
One joule represents (approximately): 1. The amount of electricity required to run a 1 W device for 1 s. 2. The energy required to accelerate a 1 kg mass at 1 m/s2 through a distance of 1 m. 3. The kinetic energy of a 2 kg mass travelling at 1 m/s, or a 1 kg mass travelling at 1.41 m/s.[citation needed] 4. The energy required to lift an apple up 1 ...
Zeptojoule
1. 160 zeptojoule is about one electronvolt.[citation needed] The minimal energy needed to change a bit of data in computation at around room temperature – approximately 2.75 zJ – is given by the Landauer limit.[citation needed]
Nanojoule
1. 160 nanojoule is about the kinetic energyof a flying mosquito.
Microjoule
1. The Large Hadron Collider (LHC) produces collisions of the microjoule order (7 TeV) per particle.[citation needed]
1 joule is equal to (approximately unless otherwise stated):[citation needed] 1. 107 erg(exactly) 2. 6.24150974×1018 eV 3. 0.2390 cal(gram calories) 4. 2.390×10−4 kcal(food calories) 5. 9.4782×10−4 BTU 6. 0.7376 ft⋅lb(foot-pound) 7. 23.7 ft⋅pdl(foot-poundal) 8. 2.7778×10−7 kW⋅h(kilowatt-hour) 9. 2.7778×10−4 W⋅h(watt-hour) 10. 9.8692×10−3 latm(litre...
In mechanics, the concept of force (in some direction) has a close analogue in the concept of torque (about some angle):[citation needed] A result of this similarity is that the SI unit for torque is the newton-metre, which works out algebraically to have the same dimensions as the joule, but they are not interchangeable. The General Conference on ...
A watt-second (symbol W s or W⋅s) is a derived unit of energy equivalent to the joule. The watt-second is the energy equivalent to the power of one watt sustained for one second. While the watt-second is equivalent to the joule in both units and meaning, there are some contexts in which the term "watt-second" is used instead of "joule", such as in ...
A mindmap of ICTs Information and communications technology (ICT) is an extensional term for information technology (IT) that stresses the role of unified communications and the integration of telecommunications (telephone lines and wireless signals) and computers, as well as necessary enterprise software, middleware, storage and audiovisual, that enable users to access, store, transmit ...
Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics with the major subdisciplines of number theory, [1] algebra, [2] geometry, [1] and analysis, [3 ...
The Sun is the star at the center of the Solar System. It is a massive, hot ball of plasma, inflated and heated by energy produced by nuclear fusion reactions in its core. Part of this energy is emitted from its surface as visible light, ultraviolet, and infrared radiation, providing most of the energy for life on Earth. The Sun has been an ...
The Chernobyl disaster [a] began on 26 April 1986 with the explosion of the No. 4 reactor of the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the Ukrainian SSR, close to the border with the Byelorussian SSR, in the Soviet Union. [1] It is one of only two nuclear energy accidents rated at seven—the maximum severity ...
