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  2. Engineering News-Record - Wikipedia

    en.wikipedia.org/wiki/Engineering_News-Record

    The Engineering News-Record (widely known as ENR) is an American weekly magazine that provides news, analysis, data and opinion for the construction industry worldwide. It is widely regarded as one of the construction industry's most authoritative publications and is considered by many to be the "bible" of the industry.

  3. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    For a small household plant that can produce around 3 MWh/year, the cost is between 400 and €700/MWh, depending on location. Solar power was by far the most expensive renewable source of electricity among the technologies studied, although increasing efficiency and longer lifespan of photovoltaic panels together with reduced production costs ...

  4. Excess noise ratio - Wikipedia

    en.wikipedia.org/wiki/Excess_Noise_Ratio

    Knowing both Y and the ENR, one can then determine the amount of noise contributed by the amplifier and hence can calculate the noise figure of the amplifier. Other techniques exist for making this measurement but either require accurate measurements of impedance or are inaccurate. The following formula relates Y-factor to ENR:

  5. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first handheld calculator was a 1967 prototype called Cal Tech, whose development was led by Jack Kilby at Texas Instruments in a research project to produce a portable calculator. It could add ...

  6. Golden number (time) - Wikipedia

    en.wikipedia.org/wiki/Golden_number_(time)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 June 2024. Position of the year within the 19-year Metonic cycle Not to be confused with Golden ratio. Month of January from Calendarium Parisiense (fourth quarter of the 14th c.). The golden numbers, in the leftmost column, indicate the date of the new moon for each year in the 19-year cycle A golden ...

  7. 2024 AdventHealth 400 - Wikipedia

    en.wikipedia.org/wiki/2024_AdventHealth_400

    The 2024 AdventHealth 400 was a NASCAR Cup Series race that was held on May 5, 2024, at Kansas Speedway in Kansas City, Kansas.Contested over 268 laps—extended from 267 laps due to an overtime finish, on the 1.5-mile (2.4 km) asphalt speedway, it was the 12th race of the 2024 NASCAR Cup Series season and played host to the closest finish in NASCAR Cup series history at 0.001 seconds between ...

  8. 2024 Ally 400 - Wikipedia

    en.wikipedia.org/wiki/2024_Ally_400

    The 2024 Ally 400 was a NASCAR Cup Series race held on June 30, 2024, at Nashville Superspeedway in Lebanon, Tennessee.Contested over 331 laps -- extended from 300 laps due to an overtime finish and broke the NASCAR record for the most overtime attempts with five attempts on the 1 + 1 ⁄ 3-mile (2.146 km) speedway, it was the 19th race of the 2024 NASCAR Cup Series season.

  9. Common Era - Wikipedia

    en.wikipedia.org/wiki/Common_Era

    The two notation systems are numerically equivalent: "2025 CE" and "AD 2025" each describe the current year; "400 BCE" and "400 BC" are the same year. [ 1 ] [ 2 ] The expression can be traced back to 1615, when it first appears in a book by Johannes Kepler as the Latin : annus aerae nostrae vulgaris ( year of our common era ), [ 3 ] [ 4 ] and ...