Transition lenses—also known as photochromic lenses—have become more popular in recent years. These lenses darken when exposed to sunlight and lighten under the shade. Many people, especially the older generation, invest in transition lenses due to the prevalence of eye illnesses, increased public awareness of eye health, and the emerging features added to these lenses. Because of this, Yahoo Finance reports that the photochromic lenses market size is estimated to
On 6 February 2023, two strong earthquakes struck southern and central Turkey. The first earthquake is considered the most powerful one to have ever hit Turkey (comparable with 1939 Erzincan earthquake). Current casualty estimates: 44,400+ dead, 108,000+ injured in Turkey 6,750+ dead, 14,500+ injured in Syria (Updated 27 February 2023, at 10:00 UTC) Selected footage published across social media:
Irène Curie was born in Paris on September 12, 1897. She was the first daughter of Marie Curie and Pierre Curie, scientists who weren’t well known yet at the time of Irène’s birth. Things have changed quickly in a few years. Wilhelm Roentgen has just recently discovered the X-rays in 1895, but it was not yet understood what caused their existence. After Henri Becquerel discovered that uranium salts emitted rays
Humans manufacture 300 million tons of plastic every year. 8 million tons are estimated to end up in oceans every year. If it all washed up on the coast at once, it’s enough to cover every coastline on the globe with a significant layer of trash. You can imagine it as a neverending stack of garbage about 50 cm tall, and 50 cm wide (that’s about 1.6 ft). Marine plastics
Home economics (today more commonly named family and consumer sciences) is a subject dealing with running a household. Typical matters taught at home economics (usually abbreviated as home ec in the U.S.) classes are nutrition, family finance, human development, interior design. Home economics is present in many countries as a mandatory or voluntary course, usually in high school. Historically, it was also taught in universities. It was more focused on
Lego bricks are one of most celebrated toys in history. The interlocking plastic toy blocks were introduced by Danish company Lego in 1949. In 1958 the brick design was perfected. Company engineers have spent five years trying to find the perfect material. After they picked the material (ABS plastic) and the basic design, it never changed again. You can take Lego blocks from 1960s, pick a new set in a
September 8, 2020 – Nala, an 8-month-old female calico cat was traveling from Bengaluru to Delhi on September 1. Her owner, Aastha Shah, checked in her two cats in separate IATA certified pet carriers. The cats traveled in cargo hold of Air India Airbus A320. After landing at Delhi’s Indira Gandhi International Airport baggage handling staff discovered that one of the pet carriers somehow unlatched, and the cat was missing.
A placebo is a substance or treatment designed to have no real therapeutic quality. The placebo effect is patient’s perceived belief in treatment’s effectiveness. It has been studied since 18th century, and confirmed by influential 1955 research study titled The Powerful Placebo. Patients can perceive therapeutic outcome of treatment even when they are treated with sugar pills that cannot possibly have real medicinal value.
Ever since Charles Darwin found spiders inexplicably appearing onboard HMS Beagle in 1832, scientists wondered about mechanisms allowing spiders to travel in the air. Charles Darwin was surprised to find thousands of small red spiders aboard his ship which was 60 miles offshore. “In the evening all the ropes were coated & fringed with Gossamer web,” wrote Darwin in his diary. The tiny arachnids were wingless, as all spiders are.
Mercury is a chemical element. It is a metal, but has peculiar physical properties. It’s one of few metals that is liquid in standard temperature and pressure (imagine normal room temperature conditions). Mercury is commonly known as quicksilver. Other than its cool sounding name (almost like a superhero, Captain Quicksilver), and interesting physical properties, mercury and most of its compounds are toxic. Mercury poisoning can be a result of vapors