Paddle and boat. History of invention and production

Free technical library

HISTORY OF TECHNOLOGY, TECHNOLOGY, OBJECTS AROUND US
Free library / Directory / The history of technology, technology, objects around us

Paddle and boat. History of invention and production

The history of technology, technology, objects around us

Directory / The history of technology, technology, objects around us

Comments on the article

There are several reasons that prompted a person to master the water element. Ancient people often moved from one place to another and had to carry their belongings during their wanderings. Trying to facilitate this difficult work, they began to think about means of transportation and, above all, learned to use the power of water to their advantage. In addition, in places that were located on the shores of the seas or large rivers rich in fish, swimming facilities were needed for fishing.

Paddle and boat
Log raft

The first means of navigation of the ancients was a raft. People have long noticed that tree trunks do not sink in water. Having tied them together and armed with a long pole, they ventured on the first voyages along the coast. The raft was a clumsy and heavy structure, but it was quite suitable for transporting large loads, especially if the navigation was downstream. In deep places, where the pole did not reach the bottom, people learned to control the raft using a paddle board (perhaps observations of waterfowl suggested this idea).

However, the raft could not satisfy all the needs of a person who very often felt the need for a small, light and maneuverable watercraft. This eventually became a wooden dugout boat. Its prototype was also a log.

Exploring the ways of overcoming water obstacles by backward Australian tribes, scientists have in general terms restored the main stages of turning a log into a boat. So, if a native needed to cross a river, he chopped off a part of the trunk of a light tree with a stone ax, cleared it of branches, then lay down on a log and swam, working with his feet. Some improvement of this simplest swimming projectile was the sharpening of the log.

Paddle and boat
Wooden boat with oars

The next step can be considered the slab slab, because it was more convenient for the swimmer to lie on the flat side. Actually, the log became a boat after people began to gouge or burn a hole in it for the rower. At the same time, rowing was developing. To move along the coast, a person could use a pole, but in order to swim in deep places, he needed a special device - an oar. It developed gradually from the rowing board and already in very ancient times took on a modern spade-shaped form.

Paddle and boat
Mesolithic wooden paddle

Making even a small dugout boat with stone tools required considerable and strenuous effort. Therefore, in those places where the boat did not require great strength and carrying capacity, dugouts were completely forced out of use by light boats sewn from bark. It was much easier to build such a boat. Carefully separating the bark from the tree, the master carefully scraped and caulked it. Then the ends of the piece were sewn together and tied with roots, the seams were treated with resin.

Paddle and boat
One-deck boat

For rigidity, several spacers were installed inside the case. A skilled craftsman could make such a boat in just a few hours. In the north, where there was no wood, they learned to make such boats from skins, and a hard whalebone was used as a skeleton.

Thus, about 12 thousand years ago, a rowing boat entered the everyday life of our ancestors. Man began to master the aquatic environment and received at his disposal the first vehicle in history.

Author: Ryzhov K.V.

We recommend interesting articles Section The history of technology, technology, objects around us:

▪ Fire

▪ Diesel

▪ Polyethylene

See other articles Section The history of technology, technology, objects around us.

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

Texas Instruments LMX2594 Frequency Synthesizer 09.08.2017

Texas Instruments has released a new LMX2594 frequency synthesizer with a wide operating frequency range and unprecedented high microwave signal parameters. LMX2594 has best in class phase noise: -236dBc/Hz; jitter 50 fs and high operating frequency - up to 15 GHz without the use of an internal multiplier.

The synthesizer contains a synchronization input, allows you to implement frequency jumps (frequency ramping), and the output signal can be taken on two differential outputs.

The LMX2594 allows you to synchronize the outputs of multiple chips, as well as provide a predictable, stable delay between input and output. A fast calibration mechanism allows you to change the frequency in 20 µs. The output power adjustment range is from 7 to 15 dBm.

The synthesizer is powered from a single voltage of 3,3 V; Built-in LDOs eliminate the need for additional on-board regulators.

Applications for LMX2594:

Measuring equipment.
High speed data converters (JESD204B).
Cellular 5G networks.
Communication infrastructures of the millimeter range.
Phased array antennas and beamforming.

Other interesting news:

▪ Wrist electronic gadgets are almost useless

▪ Typhoon Portable DVD Player

▪ Nanomaterial of molecules twisted simultaneously in opposite directions

▪ Electric turbines from Formula 1 for road cars

▪ Fish scale screens

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Measuring equipment. Article selection

▪ article Passive tone controls. The art of audio

▪ article Who are reptiles? Detailed answer

▪ article Functional composition of Colormat TVs. Directory

▪ article Electric hedgehog. Encyclopedia of radio electronics and electrical engineering

▪ article Confused woman. Focus Secret

Leave your comment on this article:

All languages of this page

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