|
Vocapedia > Science > Measurement units
Computer storage, distance, information, land area, length, mass, power, temperature, volume, weight
The Guardian p. 1 12 March 2007
1 inch (in / ") = 2.54 centimeters
http://www.nytimes.com/2014/04/07/
http://www.nytimes.com/2014/02/02/nyregion/
micron
A micron equals one millionth of a meter.
N95 and other respirator masks are far superior to surgical or cloth masks in protecting essential medical workers against the coronavirus.
(...)
N95 masks offered 96 percent protection, the analysis found, while the figure for surgical masks was 77 percent.
(...)
The new analysis also suggests that covering the eyes with face shields, goggles and glasses may provide additional safeguards for health care workers and people in the community.
The report is among the first to lay out evidence specific to coronaviruses, rather than extrapolating from data on other respiratory viruses.
The coronavirus is thought to spread primarily through droplets expelled when an infected person coughs, sneezes, sings, talks or even breathes.
Some infections may also be caused by people touching a contaminated surface and then their mouth, nose or eyes.
Study after study has indicated that the virus can also spread via tiny droplets less than 5 microns, called aerosols. (A micron equals one millionth of a meter.)
But the W.H.O. has so far not acknowledged this risk and has not backed the universal use of masks.
“There’s this fear around saying airborne — but that’s what it is,” Dr. MacIntyre said.
A recent review in the journal Science took direct aim at the W.H.O.’s reluctance on this issue, saying the organization’s recommendations for physical distancing and hand washing were based on studies “carried out in the 1930s.”
The C.D.C. did not recommend masks till April 3.
Even now, its guidance says surgical masks offer enough protection for health care workers unless they are involved in procedures that produce aerosols.
The C.D.C. initially recommended N95 masks for all health care personnel.
Dr. MacIntyre said the agency later downgraded its recommendations because of a shortage of N95 masks and personal protective equipment.
“Guidelines should be based on evidence, not on supplies,” she said.
“It’s like telling an army, ‘Oh sorry, we’ve run out of guns, just take these bows and arrows and face the enemy.’”
She noted that N95 masks were inexpensive to produce and that other countries, including Australia, had repurposed existing manufacturing facilities to make the masks.
https://www.nytimes.com/2020/06/01/
1 foot (ft / ') = 0.3048 meter 2, 3, 4, 5... feet
https://www.nytimes.com/2024/11/22/
https://www.npr.org/2024/06/08/
https://www.nytimes.com/2020/08/18/
https://www.nytimes.com/2020/05/20/
https://www.nytimes.com/2014/09/20/
https://www.nytimes.com/2014/04/07/
https://archive.nytimes.com/cityroom.blogs.nytimes.com/2014/01/22/
https://www.nytimes.com/2013/10/19/
https://www.theguardian.com/lifeandstyle/2009/may/31/
1 yard (yd) = 0.9144 meter
1 mile (mi) = 1.609 kilometers
https://www.theguardian.com/science/2020/apr/29/
https://www.npr.org/sections/thetwo-way/2014/01/31/
icy comet nucleus > The nucleus of comet C/2014 UN271 (Bernardinelli-Bernstein) is about 80 miles in diameter, which is larger than the state of Rhode Island, USA
https://www.npr.org/2022/04/13/
an asteroid more than a mile wide UK
https://www.theguardian.com/science/2020/apr/29/
Astronomical Unit (AU) 1 AU is approximately 150 million km
https://www.npr.org/sections/thetwo-way/2017/12/12/
light-year UK / USA
https://en.wikipedia.org/wiki/
https://www.reuters.com/science/
https://www.nytimes.com/2020/05/20/
http://www.npr.org/sections/thetwo-way/2016/08/24/
https://www.theguardian.com/science/2016/jul/07/
http://www.nytimes.com/2013/04/19/
galaxy PKS 2014-55, 800 million light years from Earth
https://www.nytimes.com/2020/05/14/
1 light year is the distance light can travel in vacuum in one year’s time.
This distance is equivalent to roughly 9,461,000,000,000 km or 5,878,000,000,000 miles.
This is such a large distance.
For comparison, consider the circumference of the Earth when measured at the equator: 40,075 km.
You can even throw in the center to center distance between the Earth and the Moon, 384,403 km, and that value would still pale in comparison to 1 light year.
Pluto, at its farthest orbit distance from the Sun, is only about 7,400,000,000 km from the center of our Solar System.
Because of its great scale, the light year is one of the units of distance used for astronomical objects.
For example, Andromeda Galaxy, which is the nearest spiral galaxy from the Milky Way, is approximately 2.5 million light years away.
Alpha Centauri, the nearest star system from our own Solar System is only 4.37 light years away. http://www.universetoday.com/39725/1-light-year/
https://www.universetoday.com/45003/
at 240 million light years away
Troy weight is a system of units of mass that originated in 15th-century England, and is primarily used in the precious metals industry.
The Troy weights are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces).
The troy grain is equal to the grain-unit of the avoirdupois system, the troy ounce is heavier than the avoirdupois ounce, yet the troy pound is lighter than the avoirdupois pound. https://en.wikipedia.org/wiki/Troy_weight - August 23, 2020
https://en.wikipedia.org/wiki/Troy_weight
ounce / oz = 28.3495231 grams UK / USA
https://www.npr.org/2021/03/30/
https://www.npr.org/2019/05/29/
http://www.guardian.co.uk/uk-news/2013/jul/22/
lb > 1 pound = 453.59237 grams
http://www.guardian.co.uk/uk-news/2013/jul/22/
1 stone = 6.35029318 kilograms UK
https://www.theguardian.com/society/2005/feb/22/
Nancy Classics Ernie Bushmiller GoComics July 08, 2022 https://www.gocomics.com/nancy-classics/2022/07/08
Steve Kelley political cartoon GoComics June 05, 2022 https://www.gocomics.com/stevekelley/2022/06/05
1 US gallon = 3.78541178 liters UK / USA
2023
https://www.nytimes.com/2023/03/22/
2022
https://www.gocomics.com/nancy-classics/2022/07/08
https://www.npr.org/2022/06/06/
https://www.gocomics.com/stevekelley/2022/06/05
https://www.npr.org/2022/05/28/
https://www.npr.org/2022/03/07/
2021
https://www.theguardian.com/us-news/2021/oct/04/
2017
http://www.npr.org/2017/05/08/
2015
http://www.nytimes.com/interactive/2015/05/21/us/
http://www.npr.org/blogs/thesalt/2015/04/15/
http://www.nytimes.com/interactive/2015/04/01/us/
http://www.nytimes.com/2014/03/08/
http://www.nytimes.com/2012/03/01/
http://www.nytimes.com/2009/09/18/us/
a gallon of gas
https://www.npr.org/2022/06/06/
half-gallon + N
https://www.npr.org/2019/07/05/
1 US bushel = 35.239072 liters
measure
27th General Conference on Weights and Measures USA
(...) the 27th General Conference on Weights and Measures on Friday introduced four new prefixes to the International System of Units, or metric system: ronna (27 zeroes after the first digit) and quetta (30 zeroes), which are now at the top of the measurement range, and ronto (27 zeroes after the decimal point) and quecto (30 zeroes), which are now at the bottom.
https://www.npr.org/2022/11/19/
measurement
unit measurement USA
https://www.npr.org/2022/11/19/
metrology USA
https://www.npr.org/2022/11/19/
decimalities
metrication UK
https://www.economist.com/britain/2004/07/15/
metric
UK Metric Association
metric system
https://www.npr.org/2020/03/05/
metric units > watt, kelvin, farad, newton, joule and gray
metrophile
weights and measures
ounce
pound
kilo
stone
litre
28 trillion tonnes of ice UK
https://www.theguardian.com/environment/2020/aug/23/
foot
inch
furlong
The acre is a unit of land area used in the imperial and US customary systems.
It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, 1⁄640 of a square mile, or 43,560 square feet, and approximately 4,047 m2, or about 40% of a hectare.
Based upon the International yard and pound agreement of 1959, an acre may be declared as exactly 4,046.8564224 square metres. - August 1, 2021 https://en.wikipedia.org/wiki/Acre
https://www.npr.org/2022/12/20/
https://www.npr.org/2021/08/01/
https://www.propublica.org/article/
https://www.npr.org/2020/09/20/
https://www.npr.org/2019/06/05/
https://www.theguardian.com/environment/2007/mar/12/
data storage
bit
A bit is a single unit of data, expressed as either a "0" or a "1" in binary code.
A string of eight bits equals one byte.
Any character formed, such as a letter of the alphabet, a number, or a punctuation mark, requires eight binary bits to describe it.
For example:
https://www.wisegeek.com/what-is-mbps.htm
What is the Difference Between a Bit and a Byte?
A bit, short for binary digit, is the smallest unit of measurement used for information storage in computers. A bit is represented by a 1 or a 0 with a value of true or false, sometimes expressed as on or off. Eight bits form a single byte of information, also known as an octet. The difference between a bit and a byte is size, or the amount of information stored.
https://www.easytechjunkie.com/
1000 bits = 1 kilobit
1000 kilobits = 1 megabit
1000 megabits = 1 gigabit
https://www.easytechjunkie.com/
computer memory
https://www.easytechjunkie.com/
Megabits per second (Mbps) refers to data transfer speeds as measured in megabits (Mb).
This term is commonly used in communications and data technology to demonstrate the speed at which a transfer takes place.
A megabit is just over one million bits, so "Mbps" indicates the transfer of one million bits of data each second.
Data can be moved even faster than this, measured by terms like gigabits per second (Gbps).
http://www.wisegeek.org/what-is-mbps.htm
megabyte Megabytes (MBs) are collections of digital information.
The term commonly refers to two different numbers of bytes, where each byte contains eight bits.
The first definition of megabyte, used mainly in the context of computer memory, denotes 1 048 576, or 220 bytes.
The other definition, used in most networking and computer storage applications, means 1 000 000, or 106 bytes.
Using either definition, a megabyte is roughly the file size of a 500-page e-book. http://www.wisegeek.com/what-are-megabytes.htm
gigabit GB
A gigabit is a unit of measurement used in computers, equal to one billion bits of data. A bit is the smallest unit of data. It takes eight bits to form or store a single character of text. These 8-bit units are known as bytes. Hence, the difference between a gigabit and a gigabyte is that the latter is 8x greater, or eight billion bits.
http://www.wisegeek.com/what-a-gigabit.htm
gigabyte
A gigabyte is a term that indicates a definite value of data quantity with regards to storage capacity or content. It refers to an amount of something, usually data of some kind, often stored digitally. A gigabyte typically refers to 1 billion bytes.
http://www.wisegeek.com/what-is-a-gigabyte.htm
terabyte
A terabyte (TB) is a large allocation of data storage capacity applied most often to hard disk drives.
Hard disk drives are essential to computer systems, as they store the operating system, programs, files and data
necessary to make the computer work.
Depending on what type of storage is being measured, it can be equal to either 1,000 gigabytes (GB) or 1,024 GB;
disk storage is usually measured as the first,
while processor storage as the second.
In the late 1980s, the average home computer system had a single hard drive with a capacity of about 20 megabytes (MB).
By the mid 1990s, average capacity increased to about 80 MBs.
Just a few years later, operating systems alone required more room than this, while several hundred megabytes represented an average storage capacity.
As of 2005, computer buyers think in terms of hundreds of gigabytes, and this is already giving way to even greater storage. http://www.wisegeek.org/what-is-a-terabyte.htm
Petabyte
In the world of ever-growing data capacity, a petabyte represents the frontier just ahead of the terabyte, which itself runs just ahead of the gigabyte.
In other words, 1,024 gigabytes is one terabyte, and 1,024 terabytes is one petabyte.
To put this in perspective, a petabyte is about one million gigabytes (1,048,576). https://www.easytechjunkie.com/what-is-a-petabyte.htm
temperature scale
Celcius
The degree Celsius is a unit of temperature on the Celsius scale, a temperature scale originally known as the centigrade scale.
The degree Celsius (symbol: °C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference or range between two temperatures.
It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale.
https://en.wikipedia.org/wiki/Celsius - June 21, 2021
in 40C UK
https://www.theguardian.com/uk-news/2022/jul/17/
temperatures > surge to a historic high of 40.3C UK
https://www.theguardian.com/uk-news/2022/jul/19/
Farenheit
The Fahrenheit scale is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit (1686-1736)
https://en.wikipedia.org/wiki/
reach 115 degrees Fahrenheit USA
https://www.npr.org/2022/07/22/
Paris climate agreement - signed in 2016 USA
The Paris climate agreement set a goal of limiting global warming to well below 2 degrees Celsius, and ideally no more than 1.5 degrees Celsius, compared to average temperatures in the late 1800s.
That lower target is looming.
The average temperature on Earth over the last decade was about 1.1 degrees Celsius higher than pre-industrial temperatures.
In general, it's easier to use Celsius in this context because both the United Nations and scientists use it.
And the target numbers are nice and round.
But here's how those numbers look in more-familiar Fahrenheit: humans are trying to limit warming to between about 2.7 and 3.6 degrees Fahrenheit, and right now we're already at about 2 degrees Fahrenheit of warming.
The new study, published in the journal Nature Climate Change, calculates how much carbon dioxide humans can still emit before hitting that 1.5 degree Celsius limit.
If humans keep emitting planet-warming greenhouse gasses at the current rate, that threshold will be reached in about six years, the authors find.
https://www.npr.org/2023/10/30/
https://www.npr.org/2023/10/30/
Corpus of news articles
Science > Measurement units >
Length, weight, computer storage
The world generates so much data that new unit measurements were created to keep up
November 19, 2022 NPR
As ever more digital data is created and stored, the world needs
more unit measurements to keep up with the ever-expanding numbers.
The world generates so much data that new unit measurements
Tensions Raise Specter of Gas at $5 a Gallon
February 29, 2012 The New York Times By CLIFFORD KRAUSS
HOUSTON — Gasoline for $5 a gallon? The possibility is hardly
far-fetched.
Tensions Raise Specter of Gas at $5 a
Gallon,
700-pound woman rescued from second-floor bathroom
Wed Apr 4, 2007 9:03AM EDT Reuters
PHILADELPHIA (Reuters Life!) - A 700-pound (318 kg) woman was rescued from
her bathroom by firefighters who cut away part of an exterior wall and removed a
window before lowering her to the ground, a fire official said on Tuesday.
700-pound woman rescued
from second-floor bathroom,
Fat boy may be put in care
February 25, 2007 From The Sunday Times Sarah-Kate Templeton, Health Correspondent
AN eight-year-old boy who weighs 14 stone, more than
three times the average for his age, may be taken into care if his mother fails
to improve his diet.
McKeown will appear on Tonight with Trevor McDonald on ITV tomorrow.
Fat boy may be put in care,
Explore more on these topics Anglonautes > Vocapedia
|
|