Daily Archives: January 18, 2020
Why are there seven days in a week? – Henry E., age 8, Somerville, Massachusetts
Waiting for the weekend can often seem unbearable, a whole six days between Saturdays. Having seven days in a week has been the case for a very long time, and so people don’t often stop to ask why.
Most of our time reckoning is due to the movements of the planets, Moon and stars. Our day is equal to one full rotation of the Earth around its axis. Our year is a revolution of the Earth around the Sun, which takes 365 and ¼ days, which is why we add an extra day in February every four years, for a leap year.
But the week and the month are a bit trickier. The phases of the Moon do not exactly coincide with the solar calendar. The Moon cycle is 27 days and seven hours long, and there are 13 phases of the Moon in each solar year.
Some of the earliest civilizations observed the cosmos and recorded the movements of planets, the Sun and Moon. The Babylonians, who lived in modern-day Iraq, were astute observers and interpreters of the heavens, and it is largely thanks to them that our weeks are seven days long.
The reason they adopted the number seven was that they observed seven celestial bodies – the Sun, the Moon, Mercury, Venus, Mars, Jupiter and Saturn. So, that number held particular significance to them.
Other civilizations chose other numbers – like the Egyptians, whose week was 10 days long; or the Romans, whose week lasted eight.
The Babylonians divided their lunar months into seven-day weeks, with the final day of the week holding particular religious significance. The 28-day month, or a complete cycle of the Moon, is a bit too large a period of time to manage effectively, and so the Babylonians divided their months into four equal parts of seven.
The number seven is not especially well-suited to coincide with the solar year, or even the months, so it did create a few inconsistencies.
However, the Babylonians were such a dominant culture in the Near East, especially in the sixth and seventh centuries B.C., that this, and many of their other notions of time – such as a 60-minute hour – persisted.
The seven-day week spread throughout the Near East. It was adopted by the Jews, who had been captives of the Babylonians at the height of that civilization’s power. Other cultures in the surrounding areas got on board with the seven-day week, including the Persian empire and the Greeks.
Centuries later, when Alexander the Great began to spread Greek culture throughout the Near East as far as India, the concept of the seven-day week spread as well. Scholars think that perhaps India later introduced the seven-day week to China.
Finally, once the Romans began to conquer the territory influenced by Alexander the Great, they too eventually shifted to the seven-day week. It was Emperor Constantine who decreed that the seven-day week was the official Roman week and made Sunday a public holiday in A.D. 321.
The weekend was not adopted until modern times in the 20th century. Although there have been some recent attempts to change the seven-day week, it has been around for so long that it seems like it is here to stay.
Hello, curious kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to CuriousKidsUS@theconversation.com. Please tell us your name, age and the city where you live.
And since curiosity has no age limit – adults, let us know what you’re wondering, too. We won’t be able to answer every question, but we will do our best.
This article has been updated to correct the details on Earth’s revolution around the Sun.
Hidden women of history: Catherine Hay Thomson, the Australian undercover journalist who went inside asylums and hospitals
In this series, we look at under-acknowledged women through the ages.
In 1886, a year before American journalist Nellie Bly feigned insanity to enter an asylum in New York and became a household name, Catherine Hay Thomson arrived at the entrance of Kew Asylum in Melbourne on “a hot grey morning with a lowering sky”.
Hay Thomson’s two-part article, The Female Side of Kew Asylum for The Argus newspaper revealed the conditions women endured in Melbourne’s public institutions.
Her articles were controversial, engaging, empathetic, and most likely the first known by an Australian female undercover journalist.
A ‘female vagabond’
Hay Thomson was accused of being a spy by Kew Asylum’s supervising doctor. The Bulletin called her “the female vagabond”, a reference to Melbourne’s famed undercover reporter of a decade earlier, Julian Thomas. But she was not after notoriety.
Unlike Bly and her ambitious contemporaries who turned to “stunt journalism” to escape the boredom of the women’s pages – one of the few avenues open to women newspaper writers – Hay Thomson was initially a teacher and ran schools with her mother in Melbourne and Ballarat.
In 1876, she became one of the first female students to sit for the matriculation exam at Melbourne University, though women weren’t allowed to study at the university until 1880.
Hay Thomson’s series for The Argus began in March 1886 with a piece entitled The Inner Life of the Melbourne Hospital. She secured work as an assistant nurse at Melbourne Hospital (now The Royal Melbourne Hospital) which was under scrutiny for high running costs and an abnormally high patient death rate.
Her articles increased the pressure. She observed that the assistant nurses were untrained, worked largely as cleaners for poor pay in unsanitary conditions, slept in overcrowded dormitories and survived on the same food as the patients, which she described in stomach-turning detail.
The hospital linen was dirty, she reported, dinner tins and jugs were washed in the patients’ bathroom where poultices were also made, doctors did not wash their hands between patients.
Writing about a young woman caring for her dying friend, a 21-year-old impoverished single mother, Hay Thomson observed them “clinging together through all fortunes” and added that “no man can say that friendship between women is an impossibility”.
The Argus editorial called for the setting up of a “ladies’ committee” to oversee the cooking and cleaning. Formal nursing training was introduced in Victoria three years later.
Hay Thomson’s next series, about women’s treatment in the Kew Asylum, was published in March and April 1886.
While working in the asylum for a fortnight, Hay Thomson witnessed overcrowding, understaffing, a lack of training, and a need for woman physicians. Most of all, the reporter saw that many in the asylum suffered from institutionalisation rather than illness.
She described “the girl with the lovely hair” who endured chronic ear pain and was believed to be delusional. The writer countered “her pain is most probably real”.
Observing another patient, Hay Thomson wrote:
She requires to be guarded – saved from herself; but at the same time, she requires treatment … I have no hesitation in saying that the kind of treatment she needs is unattainable in Kew Asylum.
The day before the first asylum article was published, Hay Thomson gave evidence to the final sitting of Victoria’s Royal Commission on Asylums for the Insane and Inebriate, pre-empting what was to come in The Argus. Among the Commission’s final recommendations was that a new governing board should supervise appointments and training and appoint “lady physicians” for the female wards.
Suffer the little children
In May 1886, An Infant Asylum written “by a Visitor” was published. The institution was a place where mothers – unwed and impoverished – could reside until their babies were weaned and later adopted out.
Hay Thomson reserved her harshest criticism for the absent fathers:
These women … have to bear the burden unaided, all the weight of shame, remorse, and toil, [while] the other partner in the sin goes scot free.
For another article, Among the Blind: Victorian Asylum and School, she worked as an assistant needlewoman and called for talented music students at the school to be allowed to sit exams.
In A Penitent’s Life in the Magdalen Asylum, Hay Thomson supported nuns’ efforts to help women at the Abbotsford Convent, most of whom were not residents because they were “fallen”, she explained, but for reasons including alcoholism, old age and destitution.
Suffrage and leadership
Hay Thomson helped found the Austral Salon of Women, Literature and the Arts in January 1890 and the National Council of Women of Victoria. Both organisations are still celebrating and campaigning for women.
Throughout, she continued writing, becoming Table Talk magazine’s music and social critic.
In 1899 she became editor of The Sun: An Australian Journal for the Home and Society, which she bought with Evelyn Gough. Hay Thomson also gave a series of lectures titled Women in Politics.
A Melbourne hotel maintains that Hay Thomson’s private residence was secretly on the fourth floor of Collins Street’s Rialto building around this time.
Home and back
After selling The Sun, Hay Thomson returned to her birth city, Glasgow, Scotland, and to a precarious freelance career for English magazines such as Cassell’s.
Despite her own declining fortunes, she brought attention to writer and friend Grace Jennings Carmichael’s three young sons, who had been stranded in a Northampton poorhouse for six years following their mother’s death from pneumonia. After Hay Thomson’s article in The Argus, the Victorian government granted them free passage home.
Hay Thomson eschewed the conformity of marriage but tied the knot back in Melbourne in 1918, aged 72. The wedding at the Women Writer’s Club to Thomas Floyd Legge, culminated “a romance of forty years ago”. Mrs Legge, as she became, died in Cheltenham in 1928, only nine years later.