A logarithmic spiral, frequently seen in natural phenomena and called spira mirabilis by Jacob Bernoulli in the 17th century, is characterised by what?
Its shape stays the same as its size increases Distances between the turnings in a logarithmic spiral increase in geometric progression. Examples of the spiral include nautilus shells, weather systems such as hurricanes, and spiral galaxies.
What item of clothing, seen frequently on news media being worn by former President of the Palestinian Authority Yasser Arafat, was popularised in the west, ?
What appeared in the Netherlands in 1608, developed by Hans Lippershey, Zacharias Janssen and Jacob Metius, and improved by Galileo in 1609?
Which 13th century philosopher, linguist, empirical scientist, writer and Franciscan Friar known as Doctor Mirabilis, was known for his mediaeval Latin work "Opus Major"?
