How does a rattlesnake rattle? Detailed answer

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How does a rattlesnake rattle? Detailed answer

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How does a rattlesnake rattle?

A rattlesnake can attack without warning with any sounds and folding into a ring. So remember: stay away from the rattlesnake!

But what kind of sounds does she make? These rumbles are produced by hard, horny cup-shaped joints. They freely connect with each other. When a rattlesnake is excited, its tail begins to vibrate. The reason for these oscillations is the joints, or rings of the end of the tail, hitting each other. The result is a harsh buzzing sound. It can be heard at a distance of 18 meters!

New rings form on the snake's tail whenever it sheds its skin. But this does not mean at all that you can determine the age of a snake by the number of rings: after all, it sheds its skin 2 to 4 times a year. Also, with age, the rings at the end of the tail fall off.

In pockmarked vipers, small spots cover the muzzle from the eyes to the nostrils. They are sensitive to heat. Since these snakes hunt at night and feed on warm-blooded animals, these pockmarks help locate food.

If you think that by attacking, a rattlesnake can cover a long distance, then again you are mistaken. The most she can do is raise her head. Even if she curls up, her lunge will be 1/3-1/2 of her entire length. Since the largest rattlesnakes are rarely longer than 2,23 meters, it is obviously not very difficult to get out of its reach.

Did you know that newly born babies already have rings at the end of their tails? And their poisonous teeth are immediately ready for use.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What is a pineapple?

If you look at a pineapple, you might think that you see one fruit in front of you. In fact, a pineapple is a group of fruits, closely pressed to each other. Each of these small fruits resembles a small apple. In the middle of the pineapple is the stem to which all the individual fruits are attached. The whole pineapple resembles a large pine cone in appearance. The Spaniards discovered pineapples during their travels in South America and brought them to Europe.

For many years, Europeans diligently cultivated pineapples in private greenhouses, and this fruit was considered a great luxury. As shipping developed, it became possible to bring pineapples grown in the tropics and deliver them to markets in the countries of the North, and pineapples grown in greenhouses became a rarity.

Currently, pineapples grow in many places, including the West Indies, Florida, North Africa, Hawaii, the Azores and Australia. The pineapple tree reaches about one meter in height and bears fruit at any time of the year. When the plant reaches maturity, new shoots develop below to bring in a new crop. One plant can live and bear fruit for many years. Pineapple leaves contain fibers from which fabric is made.

Pineapples are rarely grown from seed; they are usually propagated using shoots that are planted in dry ground. Sandy soil is best. Sometimes canopies are arranged over plants to protect them from possible frosts or excessive heat.

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Expansion board X-NUCLEO-IDS01A4 13.02.2016

The new X-NUCLEO-IDS01A4 expansion board from STMicroelectronics allows you to add wireless data transfer functionality to any project that is being developed based on Nucleo boards with STM32 microcontrollers. The X-NUCLEO-IDS01A4 board has a SPSGRF-868 radio module with a chip antenna, which completely eliminates the need for an engineer to work with high-frequency components. The board is made in the Arduino Shield form factor, compatible with MORPHO and Arduino UNO R3 family connectors.

The interface with the control microcontroller is carried out through the SPI and GPIO lines. The designer can change some of the GPIO lines by soldering the resistors on the board specifically provided for this purpose. The board additionally has an M95640-R 64 Kbit serial SPI bus EEPROM memory chip, which can be used, for example, to store user settings related to the use of the SPIRIT1 transceiver.

Due to the fact that the board uses the most popular and affordable 2,54 mm pitch connectors, X-NUCLEO-IDS01A4 is easy to connect to your own design board or even to solderless prototyping boards to quickly create a working device prototype. The low price of the expansion board allows it to be used not only in prototypes, but also in small production batches.

The X-NUCLEO-IDS01A4 board is supported by the STMCube software package, which includes the STM32CubeMX graphical code generator. The special X-CUBE-SUBG1 plug-in allows you to quickly and easily create a working wireless transceiver code for any STM32 microcontroller. The board has been tested by the manufacturer with the NUCLEO-L053R8 and NUCLEO-F401RE boards, which are based on low power microcontrollers.

X-NUCLEO-IDS01A4 Features:

Built on the basis of the SPSGRF-868 (ETSI-certified) module;
Compatible with Spirit1 Library and STM32Cube firmware;
Code examples for NUCLEO-L053R8 and NUCLEO-F401RE;
Integrated balun BALF-SPI-01D3 and chip antenna;
Memory M95640-R 64 Kbit serial SPI bus EEPROM;
Operating voltage 1,8 ... 3,6 V.

Software developers are offered a ready-made point-to-point wireless link project, which is included in the X-CUBE-SUBG1 extension software package (for STM32Cube). The software runs on STM32 and includes drivers that implement a radio channel in the sub-1 GHz range for SPIRIT1 and the SPSGRF-868 module based on it. The X-CUBE-SUBG1 software is built on the STM32Cube software technology to facilitate portability between different STM32 microcontrollers.

The software comes with examples of implementation of P2P and WM-Bus communication protocols that work on the X-NUCLEO-IDS01A4 expansion board when connected to the NUCLEO-F401RE or NUCLEO-L053R8 boards. The WM-Bus communication protocol is only available for the X-NUCLEO-IDS01A4 board.

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