When is Easter?

Credit: Android Central

Have you noticed
● Easter is on a different weekend each year
● there’s often a full moon just before Easter

● there was a full moon on Tuesday of this week (11 April)

● Easter is this weekend?

When is Easter? – simple answer
Easter Sunday is the first Sunday after the first full moon on, or after, 21 March each year. Other days of Easter are positioned around the date of Easter Sunday – Easter Friday (Good Friday etc.) is two days before – Easter Monday the day after, etc.

Applying this rule to 2017
● 12 March was a full moon

● next full moon (i.e. first on, or after, 21 March) was on Tuesday 11 April

● so Easter Sunday is the first Sunday after 11 April – Sunday 16 April 2017

Earliest possible Easter Sunday
“In 1818, as a paschal full moon fell on Saturday March 21 (the Spring Equinox), Easter was the following day – Sunday March 22 – the earliest date possible. It will not fall on this date again until 2285, a span of 467 years.” – Wikepedia¹

Latest possible Easter Sunday
“In 1943 a full moon fell on Saturday March 20. As this was before the Equinox the next full moon, which fell on Sunday April 18, determined the date of Easter – the following Sunday, April 25. It will not fall on this date again until 2038, a span of 95 years.” – Wikepedia²

When is Easter? – complex answer
https://en.wikipedia.org/wiki/Ecclesiastical_full_moon
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¹ Wikipedia: “Ecclesiastical full moon”, “Earliest Easter”, https://en.wikipedia.org/wiki/Ecclesiastical_full_moon#Earliest_Easter

² Wikipedia: “Ecclesiastical full moon”, “Latest Easter”, https://en.wikipedia.org/wiki/Ecclesiastical_full_moon#Latest_Easter / ecclesiastical full moon 14th day ecclesiastical lunar month ecclesiastical moon) ecclesiastical lunar calendar ecclesiastical lunar calendar spans the year lunar months 30 29 days approximate observed phases of the moon true synodic month length vary 29.27 29.83 days moment of astronomical opposition 14.75 days after the previous conjunction sun moon 28 days lunar month ecclesiastical full moons Gregorian lunar calendar dates of astronomical opposition day beginning midnight at 0 degrees longitude within a day or so astronomical opposition single moment entire earth hour and day opposition measured having taken place vary with longitude ecclesiastical calendar 14th day of the lunar month reckoned in local time considered day of the full moon at each longitude schematic lunar calendars get out of step with the moon checking their performance compare variation astronomical new moon standard time of 6 A.M. last day of a 30 day month 6 P.M. end of day last day of a 29 day month medieval period age of the ecclesiastical moon announced daily office of Prime reading of the martyrology Book of Common Prayer Protestant Episcopal Church of the United States of America dates paschal full moons 19 years Gregorian Easter cycle Golden Number date in March or April paschal full moon falls year of the cycle practice some editions Book of Common Prayer of the Church of England /

There’s a hunger for the truth in news reporting

Credit: Mediaite

Three days ago, I posted this:

Google fights fake news with “Fact Check” tag

Result, more page views than the previous 3 posts together, & the post with the fourth highest number of page views in 6 years. There really is a hunger for the truth.

In the face of recent world events, that's the best news this year.

Since you've read this far, it probably includes you – & you'll probably be interested in this:

FactCheck.org – “How to Spot Fake News”
https://www.factcheck.org/2016/11/how-to-spot-fake-news/ / How to Spot Fake News fake news nothing new bogus stories can reach more people more quickly via social media viral emails Facebook Google crack down fake news sites restricting their ability garner ad revenue dissipate malarkey online news consumers best defense defence spread of misinformation passed along online complete fiction Snopes.com exposing false viral claims fabricated messages distortions containing bits of truth founder David Mikkelson fake news category fictions fabrications comprise fake news subset larger bad news phenomenon shoddy unresearched error-filled error filled deliberately misleading reporting disservice to everyone viral claims aren’t news fiction satire efforts to fool readers encouraged readers skeptical of viral claims delete chain email Ask FactCheck feature answer readers’ questions viral emails social media memes made-up email windfall tax malicious fabrication fake news in today’s parlance rid inboxes garbage red flags Key Characteristics of Bogusness clear tip-offs chain email wasn’t legitimate anonymous author excessive exclamation points capital letters misspellings entreaties This is NOT a hoax links sourcing does not support completely contradicts claims being made fake stories completely made-up news grown more sophisticated site designed to look like legitimate news organization organisation easy to figure out what’s real and what’s imaginary armed with some critical thinking fact-checking tools of the trade how to spot a fake consider the source fact-checked fake news not the actual URL fantasy news website a gmail address debunked claim site most of what it publishes is fiction fantasy news satire warning bogus headline Donald Trump for President information on its mission staff members physical location legitimate news organization organisation site debunked by fact-checking organizations organisations Snopes.com viral claims online rumors maintains list known fake news websites read beyond the headline provocative headline pass along the shocking information legitimate news stories headline doesn’t always tell the whole story fake news particularly efforts to be satirical several revealing signs in the text viral rumor rumour read the full story check the author tell-tale sign of a fake story byline Peabody award Pulitzer Prize bio bogus story byline Darius Rubics bogus stories official sources source doesn’t back up the claim viral claim crime statistics murder statistics retweeted tweet Twitter from sources that are very credible FBI crime data is publicly available supposed source data fake news story satirical site surprise announcement surprise announcement garner media coverage website Google Snopes.com article fake news check the date false stories completely fake distortions of real events mendacious claims legitimate news story twist what it says claim that something that happened long ago is related to current events many inquiries from readers Trump’s election blog items that quoted from evidence check the support for claims deceptive website credit CNN bogus headline deception involves copyright infringement article distorted Trump took credit deserved no credit some kind of joke satire clearly labeled as such satirical news column Borowitz Report not everyone gets the jokes satirical columns suspected the details were far-fetched more debatable forms of satire online hoaxer Paul Horner fact a fake piece after the election hoaxes helped the campaign satire fake news designed to encourage clicks generate money ad revenue makes a living off his posts nobody fact-checks anything anymore check your biases confirmation bias confirms their beliefs take a moment to check it out express doubt in the outrageous skepticism is justified debunked claims resurgence of a fake quote since the election viral image circulated archives public relations representative quote interview fake meme Instagram quote is fake consult the experts debunking takes time FactCheck.org Snopes.com Washington Post Fact Checker PolitiFact.com fact-checked fact checked viral claim pop up in your news feed FactCheck.org fact-checkers Facebook’s Mark Zuckerberg principles underpin more accurate news ecosystem News Feed readers remain the first line of defense against fake news Viral Spiral page Ask FactChecks claim investigate factcheck.org /

Tesla Model 3 instruments in front of the driver – definitely not happening

Tesla Model 3 interior as seen at the reveal event – notice centre screen & absence of any instruments in front of the driver. Notice too, the zero in the top left of the centre screen, which is a speed display.
Credit: @steve_cars/Twitter

Since the Tesla Model 3 reveal, there has been speculation about the 15" landscape centre screen & the possibility of other instruments in the production vehicle. One popular suggestion has been a head up display (HUD). With the benefit of hindsight, the engineer driving the prototype in my post about the Model 3 reveal was committed to the advantages of the centre screen & eliminating instruments in front of the driver.¹

Recently, Elon Musk placed it beyond doubt in a Twitter exchange:

@nickg_uk No

— Elon Musk (@elonmusk) March 28, 2017

@nickg_uk @chouky02 You won't care

— Elon Musk (@elonmusk) March 28, 2017

@nickg_uk @chouky02 No

— Elon Musk (@elonmusk) March 28, 2017

“You won’t care”? – Elon Musk makes it clear that it doesn’t mean a HUD, but it does imply something in the user interface that will overcome objections to the absence of a speed display in front of the driver.

If, as the owner of a production Model 3, you do care, there are many existing add-on HUDs, including:

“15 Best Head-Up Displays (HUD)”
http://www.crookedbrains.net/2016/04/best-head-up-displays.html
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¹ HitchHiker's Guide 2 Tech: “Tesla Model 3 event (video)”, https://hhg2tech.blogspot.com/2016/04/tesla-model-3-event.html

/ Tesla Model 3 interior reveal event centre screen absence of any instruments in front of the driver speed display top left of the centre screen speed display Tesla Model 3 reveal speculation 15" 15 inch landscape centre screen center screen other instruments production vehicle popular suggestion head up display HUD engineer driving the prototype my post about Model 3 reveal committed to the advantages of the centre screen eliminating instruments in front of the driver Elon Musk placed it beyond doubt Twitter exchange battery electric car electric vehicle EV battery electric vehicle BEV lithium ion battery LiIon charge /

Electric GT Championship – first two races scheduled

Electric GT
Credit: Autosport

First 2 races of the Electric GT Champioship^1,2,3 are scheduled for 25 & 26 November 2017 at France’s Circuit Paul Ricard. Complete 2017-2018 10-race-schedule is:

25 November – Circuit Paul Ricard, France
26 November – Circuit Paul Ricard, France
January – location to be announced
March – Portugal
April – Italy
May – Germany
June – Belgium
July – The Netherlands
September – U.K.
October – Spain


Electric GT interior
Credit: Evening Standard

Each event will include:
● 20-minute practice session
● 60-minute qualifying, to determine the grid for the first race
● day race – 60km
● dusk race – 60km

http://electriccarsreport.com/2017/04/electric-gt-championship-announces-official-first-race-nov-25-26-france/

http://www.thedrive.com/accelerator/9078/first-electric-gt-championship-race-scheduled

Mark Gemmell, Co-Founder & CEO, Electric GT Holdings Inc., speaks to the Tesla Motors Club about the series in the video below. He’s made a Musk-like investment in the Championship – “All of my money’s in this business, & all my wife’s money’s in the business & a lot of my friends, so we better make this work.”

Formula E: “I do know that if we take our Model S, we take it to the same circuit, we would beat them.”

Formula 1: “This thing is gonna die soon because young folks just are not interested.”



Electric GT on a circuit


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¹ “Tesla Model S racing series”, https://hhg2tech.blogspot.com/2016/03/tesla-model-s-racing-series.html

² “Tesla Model S racer for Electric GT World Series makes an appearance”, https://hhg2tech.blogspot.com/2016/10/tesla-model-s-race-car-for-electric-gt.html

³ “Electric GT circuit racing series – lighter, quicker Tesla Model S P100D (video)”, https://hhg2tech.blogspot.com/2017/03/electric-gt-circuit-racing-series.html
/ Electric GT Championship first two races confirmed This thing is gonna die soon because young folks just are not interested first race 25th 26 November 2017 France’s Circuit Paul Ricard complete 2017-2018 10-race-schedule 25 November Circuit Paul Ricard France 26 November March Portugal April Italy May Germany June Belgium July The Netherlands September U.K. October Spain Tesla Model S racing series Tesla Model S racer Electric GT World Series Electric GT circuit racing series lighter quicker Tesla Model S P100D Electric GT Championship announces official first race November 25-26 France Electric GT Championship world’s first 100% zero-emission GT series announce 10-round championship kick off double-header Circuit Paul Ricard 25-26 November 2017 first competitive running EGT Tesla Model S P100D Le Castellet circuit launching championship pending FIA approval January Portugal March Italy April Germany May Belgium The Netherlands July U.K. September United Kingdom Britain England Spain October Electric GT round one-day event two races grids first decided during 60-minute qualifying session plenty of action both on and off the track opening event weekend long festival celebrating technology sustainability innovation marks beginning The Age of Light dates for the rest of the championship finalised next few months P100D develop development developed preparations inaugural campaign entering the final stages Electric GT Championship CEO Mark Gemmell Paul Ricard will host first two EGP events November tremendous enthusiasm championship festival for sustainability fans certain to enjoy working on the official dates rest of the campaign finalised over the coming months Electric GT Championship announced Tesla Model S P100D chosen for the first season 20 international drivers both male and female 10 professional teams identical Tesla Model S machines equipped latest OMP safety equipment running on bespoke Pirelli tyres 20-minute practice session 60-minute qualifying heat day race 60km dusk race 60km round weekend-long festival technology innovation sustainability around the circuits Season One 2017 November 25-26 France Paul Ricard Rounds 1 and 2 /

Google fights fake news with “Fact Check” tag

Fact check by Snopes.com
Credit: Online news
__________

“The Internet is the repository of the greatest library of useful & valuable information the world has ever seen – interspersed with the greatest collection of misinformation, biased reporting, nonsense, myth, rumour, half truths, error, misrepresentation & outright lies the world has ever seen.”¹

Interspersion of, “... misrepresentation & outright lies”, has never been more of a problem than during the recent US presidential election. No sign of any improvement since.

Perhaps with this in mind, Google has enabled a Fact Check tag in Google News & Search results. “This label identifies articles that include information fact checked by news publishers & fact-checking organizations.”²

“Google will flag fake news stories in search results”
https://www.engadget.com/2017/04/07/google-fake-news-fact-check-search-results/

“Google is rolling out a fact check feature in its search & news results”
https://www.recode.net/2017/4/8/15229878/google-fact-check-fake-news-search-news-results

“Google fights fake news in search with ‘fact check’ tags”
https://www.cnet.com/au/news/google-search-fake-news-fact-check-tags/
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¹ “What is the Internet?”, https://hhg2tech.blogspot.com/2016/11/what-is-internet.html

² “Fact Check now available in Google Search & News around the world”, https://blog.google/products/search/fact-check-now-available-google-search-and-news-around-world/ / Google help people find useful information great content publishers sites create access high quality information internet world wide web contributors engage thousands of new articles published online content overwhelming not all of it is factual true distinguish fact from fiction Jigsaw enabling publishers show Fact Check tag Google News news stories label identifies articles include information fact checked news publishers fact-checking organizations organisations assessing feedback users and publishers Fact Check label Google News Search globally in all languages conduct search on Google that returns authoritative result containing fact checks public claims search results page display information on the claim who made the claim fact check search result search result pages publishers checked same claim reached different conclusions fact checks Google people can make more informed judgements differing conclusions may be presented helpful people understand degree of consensus particular claim clear information on which sources agree fact checks more visible in Search results reviewing assessing fact checks informed opinions publishers Schema.org Claim Review markup fact check public statements Share the Facts widget developed Duke University Reporters Lab and Jigsaw publishers algorithmically determined authoritative source of information will qualify for inclusion content must adhere to the general policies apply to all structured data markup Google News Publisher criteria fact checks standards for accountability and transparency readability proper site representation articulated Google News General Guidelines publisher fact check claim meet these standards honor these policies site markup
organizations and the fact check community /

Renewable energy – that’s just the start

Credit: Cathy Wilcox/The Age

More wisdom at: http://cathywilcox.com.au/ / sustainable renewable renewables energy solar photovoltaic photo voltaic PV solar wind turbine hydroelectricity hydro electricity /

Redflow household battery for lower total cost of ownership

You may have read about Redflow zinc bromide hybrid flow batteries on these pages previously.¹ Robert Llewellyn recently interviewed Simon Hackett, Executive Chairman of Redflow, who provided some interesting insights:
● stores electricity by electroplating zinc from solution
● discharge returns zinc to solution

● complete discharge is a maintenance cycle, essentially restoring the battery to as-new state

● as a result, no loss of capacity with age

● greater up-front cost as it is a recent development & small volume

● durability makes total cost of ownership (TCO) lower
● TCO will improve with volume & further development

Interesting point raised in the interview – what would happen if you had solar panels on your roof & the power failed on a sunny day? Would the solar panels continue to run the house?

“One very common misunderstanding about solar panels, if you have a power failure & you just have solar [panels] it’s useless to you, even if the sun is shining. As soon as you add batteries … the battery system simulates the grid & your panels keep working.” – Simon Hackett, Executive chairman, Redflow


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¹ HitchHiker’s Guide 2 Tech: “Redflow claims to have a better solution for home electricity storage”,
https://hhg2tech.blogspot.com/2016/12/redflow-claims-to-have-better-solution.html / Simon Hackett executive chairman Australian battery storage developer Redflow better solution home electricity storage energy storage Australian householders cut costs residence residential back-up power option Redflow emerging market recent blackout South Australia back-up power options home-owners home energy storage systems harvesting storing energy solar panels Redflow’s ZCell home battery storage system power outages without interruption research firm IHS Technology forecast Australian energy storage market Australia top five markets distributed energy storage US Japan Germany UK solar photovoltaic energy storage systems wider energy market evolving battery technology increasing role nature of electricity consumption is changing innovative energy storage solutions ZCell systems local market home battery storage system ZCell Redflow ZCell emerging home battery market battery technologies available Redflow ZCell’s flow technology Redflow’s ZCell ZCell storage system unique zinc-bromine flow battery Redflow ZBM2 capable delivering 10 kilowatt hours kWh stored energy daily Redflow battery technology ZCell home battery market lithium-ion battery Redflow ZCell overhead degradation problems impact performance lithium-based lead-acid batteries ZCell contains 100 litres water-based zinc bromide salt solution circulating two separate hydraulic circuits charging zinc extracted zinc bromide solution stored plastic membrane discharge zinc released solution energy stored moving zinc inside the battery long life 100 per cent depth-of-discharge completely reversible no damage battery zinc completely removed plastic membrane end of each discharge cycle Redflow benefits ZCell other battery chemistry 100 per cent cycle depth daily delivery 10 kWh energy 100 per cent depth of discharge no risk of battery damage retaining full output capacity battery’s useful life large loss of output capacity with age other battery types no fire risk bromide-based electrolyte natural fire retardant mechanical damage no risk explosion thermal runaway high-temperature operation without active cooling unlimited shelf life state of charge hibernated for storage easy to recycle reuse /