Lenses are shaped pieces of glass or another transparent material that gather or spread light. Among spherical lenses, some are concave, some are plane, and some bulge outward. What are these outward-curving lenses called?

What is the name for the emission of light caused by mechanically crushing, scratching, or rubbing a material, a phenomenon often observed in certain non-metallic minerals such as fluorite and calcite?

Spain’s national football league was founded in 1928, and the first season was played in 1929 with ten clubs. Which team became the first champion of the Spanish league?

At the 2010 World Cup in South Africa, Germany beat England 4–1 in the round of 16, but the match is also remembered for a clear English goal that was not awarded. The shot came from around twenty meters, hit the crossbar, and bounced well over the line, yet play continued. Which English player was denied that goal?

Instead of an eagle, Bolivia placed a condor on its national emblem, and with it another animal strongly associated with the country. Which animal is shown?

Here is one for true flag experts. Fiji’s flag also includes two animals. One is the British-style lion, but which other animal appears on the Fijian flag?

Football indirectly cost the world one of the great music legends of the twentieth century. Bob Marley died on May 11, 1981, from cancer that began in his toe after a football injury. In which city did Marley die?

The frightening raptor noises in Jurassic Park were created using the mating sounds of a real animal. Which animal was used?

One day is traditionally seen as the beginning of the Christmas shopping season, when many stores advertise major discounts and sales. Which day is it, if its name includes the color black?

Blue Monday is a 1983 song remembered for one of the most recognizable intros in popular music. Which band performed this hit?

Robinson Crusoe eventually frees a native man from cannibals and gives him the name Friday, because that was the day of his rescue. This character came from the imagination of the writer behind Robinson Crusoe. Who wrote the novel?

Pancho Villa is one of the most recognizable Mexican revolutionaries and freedom fighters, but Pancho itself is only a nickname. What first name stands behind that nickname?

Which New York band is associated with the hits “Denis,” “Hanging on the Telephone,” and “Heart of Glass”?

The words Love Will Tear Us Apart appear as the epitaph on the grave of a musician who died in 1980. Who was he?

In Coyoacán, the famous Blue House is home to a museum dedicated to which artist?

Imagine not being primarily known as a musician, yet having the words “I may be gone, but Rock and Roll lives on” written on your tombstone beside the year 1982. Whose grave is this?

3.14159265358979323846264338327950288… This sequence was engraved on the tombstone of a mathematician who died in 1610 and was buried in Leiden in the Netherlands. What was his name?

What name connects the Canadian film director Egoyan with a particle made up of protons, neutrons, and electrons?

In 1961, around 1,400 Cuban exiles, backed by the CIA, attempted to overthrow Fidel Castro. They landed in a bay, but the operation ended in complete failure. Which animal gives that bay its name?

Between 1921 and 1927, the world chess champion was a Cuban grandmaster remembered as one of the greatest natural talents in the history of the game. What was his name?

A famous American producer, composer, and musician died in 2021 after leaving a major mark on twentieth-century pop and rock music. His first name was Phil, and he worked with artists such as Ike & Tina Turner, the Beatles, John Lennon, George Harrison, and the Ramones. What was his surname?

Peter Dinklage became world-famous as Tyrion in Game of Thrones, appearing in more episodes than any other character. What is the surname of the powerful family to which Tyrion belongs, even if he is not exactly loved by them?

Saint Peter is remembered as one of the twelve apostles, the first bishop of Rome, the first pope, and a Christian saint. What did he do for a living before he met Jesus?

Peter Schmeichel is widely regarded as one of the greatest goalkeepers in football history. He made his name in English football and also ended his playing career there. For which Premier League club did he play his final professional match?

The Princess and the Pea is a well-known fairy tale in which a young woman’s royal identity is tested through her extraordinary sensitivity. Who wrote this story?

In the film Bean, Mr. Bean works as a clumsy and eccentric guard at London’s Royal National Gallery. Since the board cannot fire him directly, they send him to the Grierson Gallery for the presentation of Whistler’s Mother. In which city is that gallery located?

Bob Geldof is widely remembered for organizing Live Aid, but he was also the lead singer of an Irish band known for one of the most famous songs ever written about the beginning of the week. What was the band called?

Stephen King’s first published novel appeared in 1974 and told the story of a young girl with terrifying psychic powers. What was this novel called?

Stephen William Hawking was a British theoretical physicist known for his work in cosmology, quantum gravity, and especially black holes. He also wrote popular science books explaining his ideas about the universe, including a bestseller that topped the British Sunday Times list and remained there for a record 237 weeks. What is the title of this book that mentions time?

Stephen Curry is regarded as one of the finest basketball players of today, and his father was also a well-known player who spent many years in the NBA. What is the name of Steph’s father?