How to determine the age of a tree? Detailed answer

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How to determine the age of a tree? Detailed answer

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How to determine the age of a tree?

Annual rings are visible on a freshly sawn tree trunk. Two rings correspond to one year of a tree's life - one is light, the other is dark.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

When were wheeled bags invented?

The first patent for a bag with wheels was issued in the US only in 1972. The idea to connect them instead of using carts came from Bernard Sadow, vice president of a bag manufacturing company in Massachusetts. In his version, the product was supplied with four wheels, and it was necessary to pull it by a leather loop. And only in 1987, the pilot Robert Plath invented and patented the bag we are used to with a retractable handle.

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Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Random news from the Archive

BLE chip CC2640R2 12.04.2017

The new CC2640R2F BLE chip is a version of the CC2640 with an increased ROM capacity to house most of the Bluetooh low energy stack 4.2 code along with the TI-RTOS operating system components. Now a typical BLE application for a BLE 4.2-enabled peripheral leaves about 80 kB of FLASH memory free, versus 31 kB for the CC2640F128.

In terms of hardware, the new chip comes in the same packages and is fully pin and connection compatible with the CC2640F128. All external components, including quartz, DC/DC converter binding elements and LC matching elements in the antenna matching circuit remain unchanged. This means that in an already developed device, the CC2640F128 chip can be replaced by the CC2640R2F without making any changes to the product circuit.

To get acquainted with the capabilities of the CC2640R2F and develop BLE applications, Texas Instruments releases the SIMPLELINK_CC2640R2_SDK 1.30.00.25 software package designed for compilation in the CCS7.1 environment. When installing the package, the developer receives a set of directories with TI-RTOS, a BLE stack, peripheral drivers, and ready-made sample applications.

Features of SIMPLELINK_CC2640R2_SDK 1.30.00.25 software:

A complete free Bluetooth 4.2 stack supporting all device types: Peripheral, Central, Broadcaster and Observer.
Support for all features of BLE version 4.2 LE: Secure Connections, Data Length Extension and Privacy 1.2.
The ability to work as a single-chip functionally complete device or as a "Network BLE controller" under the control of an external microcontroller.
Full integration with TI-RTOS for real-time applications with flexible power management.
Multi-role mode with 8 simultaneous connections.
Supports over-the-air firmware update using external or built-in FLASH memory.
Includes BT SIG approved HID over GATT (HOGP), Glucose and Heart Rate and custom TI Audio and firmware update (OAD) profiles.
Supports automatic code generation for Bluetooth GATT profiles using the Bluetooth Developer Studio (BDS) software plugin.
Simple Micro BLE Stack configuration for Beacon mode.
Free code generation option in the Code Composer Studio (CCS) v7.1 development environment.

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