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Washington: Strictly speaking, a day lasts 86,400 seconds. On June 30, the day will officially be a bit longer than usual because an extra second or “leap” second will be added and NASA has an explanation for this.
“The Earth’s rotation is gradually slowing down a bit, so leap seconds are a way to account for that,” said Daniel MacMillan, NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
This is the case according to the time standard that people use in their daily lives – Coordinated Universal Time or UTC.
UTC is “atomic time” — the duration of one second is based on extremely predictable electromagnetic transitions in atoms of cesium.
These transitions are so reliable that the cesium clock is accurate to one second in 1,400,000 years.
However, the mean solar day — the average length of a day, based on how long it takes the Earth to rotate — is about 86,400.002 seconds long.
“That is because the Earth’s rotation is gradually slowing down a bit owing to a kind of braking force caused by the gravitational tug of war between the Earth, the Moon and the Sun,” the US space agency said in a statement.
Scientists estimate that the mean solar day has not been 86,400 seconds long since the year 1820 or so.
This difference of two milliseconds, or two thousandths of a second — far less than the blink of an eye — hardly seems noticeable at first.
But if this small discrepancy were repeated every day for an entire year, it would add up to almost a second.
Typically, a leap second is inserted either on June 30 or December 31.
Normally, the clock would move from 23:59:59 to 00:00:00 the next day. But with the leap second on June 30, UTC will move from 23:59:59 to 23:59:60, and then to 00:00:00 on July 1.
In practice, many systems are instead turned off for one second.
Previous leap seconds have created challenges for some computer systems and generated some calls to abandon them altogether.
“In the short term, leap seconds are not as predictable as everyone would like,” said Chopo Ma, geophysicist at Goddard.
“The modelling of the Earth predicts that more and more leap seconds will be called for in the long-term but we cannot say that one will be needed every year,” Ma said.
From 1972, when leap seconds were first implemented, through 1999, leap seconds were added at a rate averaging close to one per year.
Since then, leap seconds have become less frequent.
This June’s leap second will be only the fourth to be added since 2000.
By Siddhi Jain
The author who named the book after her twin sons -- Puhor and Niyor -- is a parent who has seen and heard the tales of ridicule and discrimination suffered by many in India and beyond. She says the book is an artistic illustration for kids that details how different families can live and coexist. Whether it's children with two dads or two moms, children with a single dad or single mom, and even multiracial family units, Borthakur's book teaches love, understanding, and compassion towards unconventional families.
Beyond race, gender, color, and ethnicity which have formed the bases for discrimination since the beginning of time, this book aims to bring to light a largely ignored issue. For so long, single parents have been treated like a taboo without any attempt to understand their situations; no one really cares how or why one's marriage ended but just wants to treat single parents as villains simply for choosing happiness and loving their children.
Homosexual parents, a relatively new family system, is another form that has suffered hate and discrimination for many years. Pritisha emphasizes the need to understand that diversity in people and family is what makes the world beautiful and colourful. 'Puhor and Niyor's Mural of Family Stories' is a firm but compassionate statement against all forms of discrimination on the bases of sexual identity, gender, race, and even differences in background
The Guwahati-born author says, "With this book, I'm not trying to take away the job of parents in forming habits, I simply want to do my part as a parent. It is important that we impart the right values in our kids in a bid to build a better, more inclusive and tolerant global society that is fair to everyone." The author's first attempt at a book was an Assamese poetry 'Anubhav', published in 2010.
Set to be published under the label of Author's Channel, the book is like an adventure; a journey into uncharted territories, untouched subjects and matters long ignored. In her words. "The book takes a critical stand in defense of people in society who have had to undergo severe emotional torture for no cause of theirs. It is a terrible conception to think such people any less of a human just for being different," says publisher Aruna Naidu. By September 30, this title, priced at Rs 299, will be available online and in offline bookstores. (IANS/ MBI)
Rajesh U Pandya, Managing Director, KAI India, gives easy and completely doable tips to follow at home:
* Refrain from harsh soaps: You should be mindful of the soap you are using to wash your hands. Your soap can have a moisturizing element in it like aloe vera or shea butter. Ensure that you're washing your hands with normal water as hot water can make your hand's skin dry and scaly.
Make use of your personal nail clipper to cut your nails. | Pixabay
* Be aware of nail or cuticle inflammation or redness: If there are any signs of infection, disinfect the skin as soon as possible with an anti-bacterial or anti-fungal ointment.
(Article originally written by N.Lothungbeni Humtsoe) (IANS/ MBI)
Keywords: Nails, groom, hand, exfoliate, chew, nail clipper, bite, cuticle
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