Einstein's Design for a Fridge to Last 100 Years

Wikimedia Commons
Wikimedia Commons

After establishing the theory of relativity as a founding principle of modern physics, Albert Einstein turned his thoughts to higher matters: home appliances. In 1926, the Nobel Prize-winning scientist put his considerable mental energies towards developing the refrigerator to end all refrigerators—energy-efficient, environmentally friendly, and durable enough to last a century.

Einstein’s interest in consumer goods was initially piqued by a news story recounting the death of a family in Berlin from the poisonous fumes of their poorly sealed refrigerator—a danger which was growing increasingly prevalent as households exchanged their ice boxes for modern refrigerators containing volatile chemical coolants. He proposed a solution that avoided the use of deadly methyl chloride, ammonia, or sulfur dioxide, enlisting the aid and expertise of young Hungarian physicist, friend, and thermodynamics specialist Léo Szilàrd to draft a prototype of a safer, better “absorption refrigerator” instead.

In the traditional style of refrigerator, a mechanical compressor pressurizes potentially toxic gases to initiate the cooling process. So long as the fridge remains safely sealed, the risks to users are minimal, but a refrigerator’s moving parts often wear out its seal and expose its fatal contents to the air. Einstein and Szilàrd’s design would require no moving parts, instead using a heat source to naturally pressurize the gas contained within the series of circuits. With no immediate source of wear and tear, the Einstein-Szilàrd refrigerator would last as long as its external casing did—up to 100 years, experts estimate.

Over the course of their partnership, the two scientists took out 45 patents for refrigeration technology in six countries, eventually selling their key patents to appliance manufacturer AB Electro Lux. However, their design remained less efficient than compressor-type models, and the combined advent of the Great Depression’s effect on industrial budgets and the introduction of chlorofluorocarbons as less toxic chemical alternatives put an end to Einstein and Szilàrd’s domestic technology dreams—until a recent resurgence of interest by researchers at Oxford University, who have picked up on the idea of a fridge that can function without electricity or greenhouse gases as a green solution to our increased global dependence on cooling technologies. Though the remake of the original Einstein fridge has yet to make it to market, every kitchen might soon be keeping their drinks cold and their pie crusts chilled in Einstein’s new and improved brainchild.

10 Famous Siblings Who Conquered the World

The Williams sisters have won plenty of gold on their own and in doubles competition.
The Williams sisters have won plenty of gold on their own and in doubles competition.
Julian Finney/Getty Images

Whether you adore them or they drive you crazy, siblings play a major part in family dynamics. And while it’s noteworthy when one person in a family accomplishes great things, it’s doubly (or triply) remarkable when multiple siblings achieve greatness. To celebrate National Sibling Day, we’re taking a look at 10 sets of seriously accomplished siblings.

1. Jacob and Wilhelm Grimm

The Brothers Grimm.
A portrait of Jacob and Wilhelm Grimm.
Hulton Archive/Getty Images

Even if you know nothing about the Brothers Grimm, you’ve no doubt read versions of the fairy tales and folk stories they compiled. Born in modern-day Germany in 1785 and 1786, Jacob and Wilhelm Grimm were young boys when their father died. Their family struggled financially, but both brothers were able to study law at the University of Marburg. Jacob went to work as his professor’s library assistant, and he later became the royal librarian for the new King of Westphalia, Jerome-Napoleon Bonaparte (that Napoleon's younger brother).

Wilhelm worked as his brother’s library assistant, and because Napoleon had recently conquered much of Germany, the two brothers wanted to help their fellow Germans preserve their culture’s stories. After gathering folk tales from books and committing oral stories to paper, the Brothers Grimm published collections of these stories, including Snow White, Hansel and Gretel, and Rumpelstiltskin. Besides working together, Jacob also lived with Wilhelm and his wife, and Wilhelm named his first son Jacob. Before they died, the Brothers Grimm gave lectures and began work on a comprehensive German dictionary.

2. Louisa May and Abigail May Alcott

Louisa May Alcott
Louisa May Alcott
Culture Club/Getty Images

Louisa May Alcott is best known for her bestselling novel Little Women, which she based on her experience growing up with three sisters. But Louisa’s youngest sister—the inspiration for Amy March in Little Women—was an accomplished artist in her own right. Abigail (who went by May) had shown vast artistic promise as a child and young adult, even covering the walls and window frames in the family home with sketches of people and animals, and Louisa used a portion of her new-found fortune to further May's training.

After studying art in Boston, London, Rome, and Paris, May lived in France and earned spots for her still life and oil paintings in the Paris Salon’s exhibitions. The two sisters were so close that May named her baby daughter Louisa (nicknamed "Lulu"), and just before May died in 1879 (a month after childbirth), she told her husband to send baby Lulu to Louisa in Massachusetts. Louisa raised her niece until her own death eight years later, at which point Lulu went back to Europe to live with her father.

3. Wolfgang and Maria Mozart

Leopold Mozart, Wolfgang Amadeus, and Maria Anna Mozart.
Left to right: Leopold Mozart; his son, Wolfgang Amadeus; and his daughter, Maria Anna Mozart.
Art Media/Print Collector/Getty Images

We remember musical wunderkind Wolfgang Amadeus Mozart for his instantly recognizable symphonies and concertos, but his older sister paved the way for him to become one of history’s most famous classical composers. Born in 1751, five years before her brother, Maria Anna Mozart (nicknamed Nannerl) played piano to audiences across Europe before she hit her teens. Her technical skills earned her a reputation as a prodigy and one of the best pianists in Europe.

Nannerl and her younger brother also toured together, wowing audiences with their harpsichord performances. Nannerl wrote down (or possibly collaborated on) her brother’s first symphony, but her father made her stop performing once she turned 18. Still, Nannerl continued to compose music, and Mozart praised his sister’s work. Although some scholars dismiss Nannerl’s talent, others stress that her early interest (and success) in music deeply influenced and inspired her younger brother’s career.

4. Venus and Serena Williams

Venus and Serena Williams.
Venus and Serena Williams.
Scott Barbour/Getty Images

There aren't many athletes more decorated than the Williams sisters. Serena currently holds tennis's Open Era record for the most Grand Slam singles titles (for a man or woman) with 23, while Venus has won seven on her own, and, in 2000, became the first African American woman to win a single's title at Wimbledon since 1957. The sisters both have four Olympic gold medals to their name, three of which they won together in doubles play.

The two were born just 15 months apart, with Venus being the oldest. Despite Serena's otherworldly success, she knows to respects her sister's seniority in doubles play.

"She’s definitely the boss out there," Serena joked during an interview with BBC. To which Venus added: "Well I’m the older sister, so it kind of falls on me."

5. Emily and Austin Dickinson

Emily Dickinson and her siblings.
Left to right: Emily, Austin, and Lavinia Dickinson.
Culture Club/Getty Images

Emily Dickinson’s poetry, as well as her mysteriously reclusive later life, continues to enchant readers more than a century after her death. But most people aren’t as familiar with her brother, Austin. Born a year and a half before Emily, Austin graduated from Amherst College and Harvard Law School before working as an attorney. A prominent member of the Amherst community, Austin served as the treasurer of Amherst College, founded the town’s private cemetery, and held leadership roles in civic organizations.

Austin and his wife lived next door to Emily and had a close relationship with the poet—who never had anything published under her own name in her lifetime. After Emily’s death, her sister Lavinia found the poems and was determined to get them published, ultimately enlisting Austin’s longtime mistress, Mabel Loomis Todd, who got her poetry shared with the world.

6. The Jackson Siblings

Jermaine, Tito, Jackie, Michael, and Marlon Jackson
Left to right: Jermaine, Tito, Jackie, Michael, and Marlon Jackson, with Randy up top.
William Milsom/Getty Images

From their home base in Gary, Indiana, Joe and Katherine Jackson raised nine children. In 1969, the five eldest brothers (Jackie, Tito, Jermaine, Marlon, and Michael) hit it big as the Jackson 5, delighting audiences with catchy hits such as "I Want You Back" and "ABC." Since then, the members of the Jackson family have continued to make music, both together and separately.

Although Michael and youngest sister Janet achieved the most success with their music careers, each one of the couple’s seven other children—including sisters Rebbie and La Toya, and youngest brother Randy—achieved musical success in their own right. In fact, all nine Jackson siblings have released solo songs that charted on Billboard charts.

7. William and Caroline Herschel

William Herschel.
William Herschel was appointed court astronomer by King George III.
The Print Collector via Getty Images

Astronomer Sir William Herschel gets the credit for discovering, in March 1781, that Uranus was in fact a planet and not a star, as other astronomers had thought. Herschel also served as King George III’s official Court Astronomer, became president of the Royal Astronomical Society, and identified thousands of star clusters. But Herschel’s younger sister Caroline, born a dozen years after her brother, was also a seriously accomplished astronomer. As a young woman, she moved from her family’s home in Hanover to join her brother in England.

The two siblings shared a love of music and science, and Caroline worked as her brother’s assistant, providing technical support for the telescopes he built. She also was the first woman to be credited as the discoverer a comet (it’s called Comet C/1786 P1) and, after King George III began paying her, the first female scientist to ever be paid for her work. Caroline was awarded a Gold Medal from London’s Royal Astronomical Society and a Gold Medal for Science from Prussia’s King Frederick William IV.

8. The Wright Siblings

Wilbur Wright and his sister, Katherine.
A photo of Wilbur and Katherine Wright in 1909.
Historica Graphica Collection/Heritage Images/Getty Images

We know that Wilbur and Orville Wright were the inventors of the first successful airplane. But Katharine, the Wright brothers’ youngest sibling, played a huge role in facilitating her brothers’ aviation success. After graduating from Oberlin, Katharine worked as a Latin teacher in Dayton, Ohio. Although she wasn’t an engineer, she frequently corresponded with her brothers when they were in Kitty Hawk, North Carolina, testing airplane prototypes. The brothers bounced ideas off of her, and she gave them emotional support and encouragement when they worried that flight simply wasn’t possible. Katharine also helped run her brothers’ bicycle company, which provided the funds that the brothers used to finance their airplane experiments.

Additionally, Katharine played an integral role in publicizing the Wright Brothers’ success, encouraging them to give speeches and do public flight demonstrations. Katharine even learned French, so she could hobnob with European royalty and aristocracy, spreading the word of her brothers’ aeronautical achievement.

9. Harriet and Catharine Beecher

Harriet Beecher Stowe
Though most of the world knows Harriet Beecher Stowe, her sister, Catharine, made tremendous strides for women's education.
Culture Club/Getty Images

Harriet Beecher Stowe's famous novel Uncle Tom’s Cabin was a landmark piece of work for the anti-slavery movement, but she also had 12 siblings, many of whom also worked tirelessly for causes like abolitionism and women’s suffrage. Catharine, the oldest sibling, was passionate about seeing young girls become educated, and she opened the Hartford Female Seminary in Hartford, Connecticut, in 1824. Working from textbooks she wrote herself, Catharine taught groups of young girls everything from philosophy and art to chemistry and algebra. During her life, she opened schools in Ohio, Wisconsin, Iowa, and Illinois.

10. The Brontë Sisters

Anne, Emily, and Charlotte Bronte
Anne, Emily, and Charlotte Bronte
Rischgitz/Getty Images

Decades before J.R.R. Tolkien would create Middle-Earth, Charlotte, Emily, and Anne Brontë wrote stories together in childhood that revolved around fantasy worlds with names like Angria and Gondal. After a brief separation when they reached young adulthood, the sisters eventually reunited in 1845, following the death of their aunt Elizabeth, and began writing together once again. The next year, they published a book of poems under pen names titled Poems by Currer, Ellis and Acton Bell. Soon, each sister would write her own defining work: Charlotte published Jane Eyre in 1847, while Emily penned Wuthering Heights the same year, and in 1848, Anne Brontë published The Tenant of Wildfell Hall.

A Brief History of the Chain Letter

"If you can't participate in this chain letter you didn't ask for, let me know within five days so it will be fair to those participating!"
"If you can't participate in this chain letter you didn't ask for, let me know within five days so it will be fair to those participating!"
czarny_bez/iStock via Getty Images Plus

History can be maddeningly unspecific about certain things, particularly chronology. But when it comes to the history of the chain letter, it’s very possible that Jesus was the first to author one.

Hundreds of years ago, a story made the rounds that seemed incredible. Fifty-five years after Jesus had been resurrected and ascended into heaven, he decided to author a letter offering wisdom to his human charges. The note was taken to earth and hidden under a rock, which a young and earnest boy was able to lift. From there, the note was copied and circulated, each facsimile bearing a strange warning:

“He that copieth this letter shall be blessed of me. He that does not shall be cursed.”

As hoaxes go, it wasn’t a bad way to get someone’s attention. Copies of the letter survive from as early as the mid-1700s, proof that people have always had an innate curiosity—and superstition—about chain letters. In the decades that followed, hundreds of thousands of people have received and forwarded letters that promise charity, prosperity, or religious enlightenment.

The price for not being on board? Usually awful luck. Or death.

 

In 1888, a Methodist women’s missionary group was having serious cash flow problems. Additions to their facilities had added up to an astounding $16,000. While the group leaders prayed for assistance, they also acknowledged they might need to take the initiative.

Just when all hope seemed lost, a woman who had heard of their troubles said that she had a possible solution: Someone had told her that arranging for a chain letter could be a possible avenue to financial reward. Around the same time, the church received a chain letter requesting funds for another now forgotten object, sent to them by someone who thought it would work for this group as well. The head of the congregation, Lucy Rider Meyer, took the suggestions seriously and drafted a letter that contained both a solicitation to send her one dime and to send a copy of the letter to three friends, who would (hopefully) repeat the process.

Meyer dashed off 1500 copies and waited. The responses came pouring in. The missionaries eventually raised $6000, with many people sending more than a dime and others even using the letter as the inspiration to join their flock. In spirit and cold cash, the chain letter had been a success. Mostly.

While most recipients were happy to either contribute or disregard the letter, a few took the time to write back and complain about being targeted multiple times. One irritated addressee wrote:

"To tell the plain truth, I am exasperated with this plan. I am a very busy woman, and this is the third benevolence I have been asked to help in this way."

Others took a more direct way of holding on to their cash:

"I have figured up, and you must already have an abundance of money for the house. So I won’t send any."

The missionaries dubbed the chain letter a “peripatetic contribution box,” a kind of postal hat-passing that immediately began growing in popularity. Newspapers like the New York World printed forms to raise money for a memorial for Spanish-American war soldiers; in 1898, a 17-year-old volunteer for the Red Cross devised a chain that solicited money for ice to send to troops stationed in Cuba. So many thousands of letters poured in that they choked her Babylon, New York, post office, prompting her mother to issue an open plea to stop people from sending any more.

While potentially annoying to some, many of these letters were altruistic in nature—an attempt to drum up financial support for what was considered to be a worthy cause. But it didn’t take long for the template to be adapted to a less noble pursuit: conning people out of money.

At the height (or low point) of the Great Depression in 1935, the city of Denver became the epicenter of a massive chain letter campaign known as the Send-a-Dime effort. In a time of severe financial strife, recipients were urged to send along money to a list of names, with their own fortune coming when their turn arrived in the queue.

People in desperate need of hope began to rely on a promise of prosperity, populating chain letter brokerage firms that sold shares in names due to hit it big. The brokers made thousands; the letter writers made nothing. Western Union was sued for over $27 million for helping perpetuate the fraud, and the postal service threatened prosecution under anti-lottery and anti-solicitation statutes.

Although dime letters have since fallen by the wayside, chain letters were never totally stifled. In 1978, students at Harvard became fascinated by the “Circle of Gold” ploy sweeping the nation, where a letter could be purchased for $100 from some well-meaning seller. Fifty of those dollars would go to the person selling the letter, and the remaining $50 would be mailed to an address at the top of a list of names and addresses. The top name would be crossed out, the second place name moved up, and the buyer would attempt to sell two more letters. These were interesting marriages of chain letters as pyramid schemes, a theme that has often repeated itself.

Often, chain letters took delight in provoking a person’s superstitious nature, warning of severe consequences for not following the instructions. In some cases, there was a caution that not advancing the message would result in no change to the status quo. In others, it would be an outright warning of misfortune. These often contained testimonials that tried to personalize fate by detailing the name of a past recipient who either followed the instructions and prospered or didn’t follow the instructions and was immediately struck by a bus. For people who might otherwise be prone to tossing the letter, it helped ensure that the deliverer’s message (or scam) would be tended to properly.

 

In the 1990s, just before email replaced physical letters as the delivery method of choice for these pyramid scams and religious tracts, an unknown source perpetuated what became known as the “underpants exchange.” The letter read:

"Send one pair of pretty underwear of your choice to the person listed below, and send a copy of this letter to six friends…If you can't do this in seven days, please notify me because it isn't fair to those who have participated…You will receive 36 pairs of pretty panties!"

Despite whatever curious urge was gripping the originator, the pretty panties circulation thrived: The Baltimore Sun reported several satisfied enrollees who got mailed several pairs of underwear every week.

Chain letters still exist, primarily as social media threads that solicit money or gifts for lists of people in the hopes a person’s “turn” will eventually come. Aside from the occasional deluge of undergarments, it’s always a losing proposition. When Denver’s Send-a-Dime Depression scam came to an end, more than 100,000 “dead” letters were forwarded to the real winner: the U.S. Treasury, which took possession of $3000 in dimes.

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