Who built the first lighthouse? Detailed answer

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Who built the first lighthouse? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Did you know?

Who built the first lighthouse?

Can you imagine a highway with absolutely no warning signs for damage, intersections, curves, nearby towns and centers? Naturally, sea routes also require exactly the same signs, and the lighthouse is one of them. Its light shows sailors the way to the port, with its help they can determine their position in the sea, its light warns ships of dangerous reefs and rocks.

The first lighthouses were small towers, on top of which stood metal baskets with burning wood or coal. They probably began to appear as soon as people began to go to sea, that is, thousands of years ago. Nobody knows exactly when they appeared. But it is known for sure that in the 1th century BC. e. there was a well-known lighthouse that stood on Cape Sigeum near the Hellespont. The most famous lighthouse of ancient times was the Pharos marble lighthouse in Alexandria, Egypt, named after the island on which it stood. Today its cost would be estimated at $XNUMX million; it has been recognized as one of the seven wonders of the world. In the III century BC. e. the fire that shone on its top showed the ships the way to Alexandria.

The Romans built many famous lighthouses, for example in Boulogne, in what is now France, which operated until the XNUMXth century. Their lighthouses were small and poorly built compared to modern ones. Now every country with a sea coast has a commission in the government that deals with the construction and operation of lighthouses.

When a lighthouse can be built on land, its construction is quite simple and it does not cost too much. But when it is built on a rock that is constantly overwhelmed by waves, or on quicksand, or on shallows, difficult engineering problems must be solved.

The lighthouse tower may be built of hard stone, such as granite, or lined with stone, or consist of a reinforced concrete structure.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How many reforms did Napoleon carry out in six days in Malta?

Heading with his army to Egypt, in 1798 Napoleon captured Malta along the way. In six days spent on the island, he managed to abolish the power of the Knights of Malta, reform the administration with the creation of municipalities and financial management, abolish slavery and all feudal privileges, appoint 12 judges and lay the foundations of family law, and also introduce primary and general public education. .

Test your knowledge! Did you know...

▪ What is a pomegranate?

▪ What is Polar Formula-1?

▪ For which cartoon was its author awarded 8 Oscar statuettes at once?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Volvo self-driving cars 06.08.2013

Volvo, like many other automakers, is interested in building cars that can drive without a driver. She, of course, wants to get ahead of everyone, even Google, so she has been developing the appropriate technology for a long time. The other day, she passed another series of field tests, the results of which Volvo was very pleased with.

Officially, the main goal of creating a system of unmanned control of the car, Volvo calls the desire to reduce the number of accidents and victims on the roads by 2020. In principle, this may indeed be the case, since her cars are considered among the safest in the world.

Its system of autonomous control of cars includes several technologies at once, including those that have long been present in mass-produced cars. In particular, the development of Volvo includes the function of detecting pedestrians on the roads and other obstacles - vehicles, damage to the road surface, and so on. Naturally, the corresponding sensors are connected to the braking system.

At the same time, Volvo teaches its cars to park without a driver, to drive in a convoy (one car is driving and driven by a person, the rest of the unmanned vehicles follow it strictly at a certain speed). Cruise control, of course, will also become part of this system. And speaking of parking, it will be possible to drive a car trying to park carefully at the curb directly from a smartphone or tablet computer - Volvo is developing applications for this.

If the current pace of development of Volvo's new technology continues, it could very well be part of its series-produced vehicles by the end of next year.

Other interesting news:

▪ Music lessons contribute to academic success

▪ Unique double asteroid discovered

▪ BeerBots mini-robots to speed up beer fermentation

▪ Aquariums soothe

▪ Decaying bone implants

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Riddles for adults and children. Article selection

▪ article Going to death greet you! Popular expression

▪ article How were the British militias ordered to destroy tanks with a hammer? Detailed answer

▪ article Diarrhea. Health care

▪ article Programmer for AT89C51/52/55 microcontrollers. Encyclopedia of radio electronics and electrical engineering

▪ article VHF radio receiver on KHA058. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews