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<!DOCTYPE html>
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Units of Measurement
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<li class="nav-header">JSR 385</li>
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<article>
<h2><a href="2024/wmd24.html">World Metrology Day 2024</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 20 May 2024
<i class="fa fa-user"></i> keilw
</p>
<p><img src="/img/wmd_2024.png" alt="World Metrology Day 2024 is Measurement for Health" title="World Metrology Day 2024" /></p>
<p>May 20 is <a href="http://www.worldmetrologyday.org">World Metrology Day</a>, commemorating the anniversary of the signing of the Metre Convention in 1875.</p>
<p>The theme for World Metrology Day 2024 is Sustainability.</p>
<br>
</article>
<article>
<h2><a href="2024/10years_jsr363.html">10 Years JSR 363</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 07 April 2024
<i class="fa fa-user"></i> keilw
</p>
<p><img src="/img/253xTen_Years.png" alt="10 Years JSR 363" title="10 Years" /></p>
<p>Today marks the 10th anniversary of the <a href="https://jcp.org/en/jsr/results?id=5666">JSR 363 approval</a>.<br />
Only 2 days before <a href="https://iotday.org/events/2024/">IoT Day 2024</a></p>
<p>Congratulations and thank you everyone who helped over all these years with JSR 363 and 385.</p>
<br>
</article>
<article>
<h2><a href="2024/mr2.html">JSR 385 Maintenance Release 2</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 11 March 2024
<i class="fa fa-user"></i> keilw
</p>
<p><img src="/img/maintenance-1151312_320.png" alt="JSR 385 MR2" title="Maintenance" /></p>
<p>Today Maintenance Release 2 of JSR 385 was published by the Java Community Process: <a href="https://jcp.org/aboutJava/communityprocess/mrel/jsr385/index2.html">https://jcp.org/aboutJava/communityprocess/mrel/jsr385/index2.html</a></p>
<p>Corresponding GitHub release tags for API are: <a href="https://github.com/unitsofmeasurement/unit-api/releases/tag/2.2">https://github.com/unitsofmeasurement/unit-api/releases/tag/2.2</a><br />
for the RI: <a href="https://github.com/unitsofmeasurement/indriya/releases/tag/2.2">https://github.com/unitsofmeasurement/indriya/releases/tag/2.2</a><br />
and for the TCK: <a href="https://github.com/unitsofmeasurement/unit-tck/releases/tag/2.2">https://github.com/unitsofmeasurement/unit-tck/releases/tag/2.2</a></p>
<p>Thanks everyone who helped with this release.</p>
<br>
</article>
<article>
<h2><a href="2024/mr2_ballot.html">JSR 385 Maintenance Review Ballot 2</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 08 January 2024
<i class="fa fa-user"></i> keilw
</p>
<p>Today Maintenance Review Ballot for Maintenance Release 2 of JSR 385 at the Java Community Process finished. MR2 of JSR 385 was unanimously approved by the JCP Executive Committee: <a href="https://jcp.org/en/jsr/results?id=6364">https://jcp.org/en/jsr/results?id=6364</a>.<br />
Maintenance Review 2 page: <a href="https://jcp.org/aboutJava/communityprocess/maintenance/jsr385/index2.html">https://jcp.org/aboutJava/communityprocess/maintenance/jsr385/index2.html</a><br />
GitHub project to track the MR: <a href="https://github.com/orgs/unitsofmeasurement/projects/7">https://github.com/orgs/unitsofmeasurement/projects/7</a></p>
<br>
</article>
<article>
<h2><a href="2023/halloween23.html">Halloween 2023</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 31 October 2023
<i class="fa fa-user"></i> keilw
</p>
<p><img src="/img/pexels-skitterphoto-3738-640.jpg" alt="Halloween" title="Halloween 2023" /></p>
<p>Happy <a href="https://en.wikipedia.org/wiki/Halloween">Halloween</a>!</p>
<p>Today is also <a href="https://en.wikipedia.org/wiki/Reformation_Day">Reformation Day</a>.</p>
<p>And the the final artifact of JSR 385 MR 2 was released as well:<br />
* <a href="https://github.com/unitsofmeasurement/unit-tck/releases/tag/2.2">unit-tck 2.2</a></p>
<br>
</article>
<article>
<h2><a href="2023/wrefd23.html">World Refrigeration Day 2023</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 26 June 2023
<i class="fa fa-user"></i> keilw
</p>
<p><img src="https://worldrefrigerationday.org/wp-content/uploads/2019/06/WRD-Logo-web.jpg" alt="World Refrigeration Day" title="World Refrigeration Day" /></p>
<p>Happy birthday, Lord Kelvin. It’s World Refrigeration Day.<br />
Lord Kelvin was born 199 years ago: June 26th, 1824. 26 June is also World Refrigeration Day.</p>
<p>All info here: <a href="https://worldrefrigerationday.org/">https://worldrefrigerationday.org/</a></p>
<p>Today further artifacts of JSR 385 MR 2 were also released:<br />
* <a href="https://github.com/unitsofmeasurement/uom-lib/releases/tag/2.2">uom-lib 2.2</a><br />
* <a href="https://github.com/unitsofmeasurement/indriya/releases/tag/2.2">indriya 2.2</a></p>
<br>
</article>
<article>
<h2><a href="2023/wmd23.html">World Metrology Day 2023</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 20 May 2023
<i class="fa fa-user"></i> keilw
</p>
<p><img src="/img/wmd_homepage_poster_2023_handy.jpg" alt="World Metrology Day 2023 is Measurement for Health" title="World Metrology Day 2023" /></p>
<p>May 20 is <a href="http://www.worldmetrologyday.org">World Metrology Day</a>, commemorating the anniversary of the signing of the Metre Convention in 1875.</p>
<p>The theme for World Metrology Day 2023 is Measurements supporting the global food system. This theme was chosen because of the increasing challenges of climate change, and global distribution of food in a world whose population reached 8 billion at the end of 2022.</p>
<p>Today the first artifacts of JSR 385 MR 2 were also released:<br />
* <a href="https://github.com/unitsofmeasurement/uom-parent/releases/tag/2.2">uom-parent 2.2</a><br />
* <a href="https://github.com/unitsofmeasurement/unit-api/releases/tag/2.2">unit-api 2.2</a></p>
<br>
</article>
<article>
<h2><a href="2023/piday23.html">Pi Day 2023</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 14 March 2023
<i class="fa fa-user"></i> keilw
</p>
<p><img src="https://www.piday.org/wp-content/uploads/2020/02/pi-day-square-logo-150x150.png" alt="Pi Day Logo" title="Pi Day" /></p>
<p>Happy Pi Day 2023!<br />
Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter “π”) is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its diameter — which is approximately 3.14159. Pi Day is an annual opportunity for math enthusiasts to recite the infinite digits of Pi, talk to their friends about math, and eat pie.</p>
<p>Check out <a href="https://www.piday.org/">Pi Day</a> for more.</p>
<br>
</article>
<article>
<h2><a href="2022/cgpm27.html">27th CGPM</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 18 November 2022
<i class="fa fa-user"></i> keilw
</p>
<p><img src="https://www.bipm.org/documents/20126/27072194/Logo+CGPMpt.jpg/2ab1f2ce-96be-5783-b51b-f134d07e06af?t=1590504481185" alt="CGPM" title="General Conference on Weights and Measures" /></p>
<p>The General Conference on Weights and Measures (CGPM), at its <a href="https://www.bipm.org/en/cgpm-2022/">27th meeting</a>,</p>
<p>recalling that decisions were made at previous meetings when it was considered timely to extend the range of SI prefixes including Resolution 12 (paragraph 3) adopted by the CGPM at its 11th meeting (1960), Resolution 8 adopted by the CGPM at its 12th meeting (1964), Resolution 10 adopted by the CGPM at its 15th meeting (1975), and Resolution 4 adopted by the CGPM at its 19th meeting (1991), decided to add to the list of SI prefixes to be used for multiples and submultiples of units the following prefixes:</p>
<table width="60%">
<tbody>
<tr>
<th width="50%">Multiplying factor</th>
<th width="30%">Name</th>
<th>Symbol</th>
</tr>
<tr>
<td>10<sup>27</sup></td>
<td class="title-third">ronna</td>
<td>
<h4>R</h4>
</td>
</tr>
<tr>
<td>10<sup>–27</sup></td>
<td class="title-third">ronto</td>
<td>
<h4>r</h4>
</td>
</tr>
<tr>
<td>10<sup>30</sup></td>
<td class="title-third">quetta</td>
<td>
<h4>Q</h4>
</td>
</tr>
<tr>
<td>10<sup>–30</sup></td>
<td class="title-third">quecto</td>
<td>
<h4>q</h4>
</td>
</tr>
</tbody>
</table>
<p>With an upcoming <a href="https://github.com/orgs/unitsofmeasurement/projects/7">Maintenance Release 2 of JSR 385</a> we will add those new prefixes to <code>MetricPrefix</code> in the API.</p>
<br>
</article>
<article>
<h2><a href="2022/ald22.html">Ada Lovelace Day 2022</a></h2>
<p class="post-meta">
<i class="fa fa-calendar"></i> 11 October 2022
<i class="fa fa-user"></i> keilw
</p>
<p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/87/Ada_Lovelace.jpg/302px-Ada_Lovelace.jpg" alt="Ada Lovelace" title="Ada Lovelace" /></p>
<p>Happy Ada Lovelace Day 2022!<br />
Ada Lovelace Day (ALD) is an international celebration of the achievements of women in science, technology, engineering and maths (STEM). It aims to increase the profile of women in STEM and, in doing so, create new role models who will encourage more girls into STEM careers and support women already working in STEM.</p>
<p>Check out <a href="https://www.daysoftheyear.com/days/ada-lovelace-day/">Days of the Year</a>.</p>
<br>
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