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    INVERNO COMEÇA NESTA QUINTA-FEIRA (20) COM A MAIOR NOITE DO ANO

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    By on Nova Serrana

    Apesar de o frio já ter chegado em uma parte do Brasil, o inverno começa no Hemisfério Sul oficialmente nesta quinta-feira (20), às 17h50, no horário de Brasília. A mudança do outono para a estação mais fria do ano é marcada por um fenômeno chamado de solstício, em que o planeta atinge o ponto mais distante em relação ao Sol.

     

    A própria palavra solstício retoma o significado da expressão Sol parado, em latim, exatamente pelo fato de que, ao ser observado a olho nu, o astro parece concluir sua trajetória quando atinge esse ponto. A mudança na posição a cada nascer ou pôr do Sol não é vista nesse dia.

     

    Segundo o astrônomo e diretor do Observatório do Valongo, da Universidade Federal do Rio de Janeiro, Thiago Gonçalves, o solstício ocorre duas vezes ao ano – uma em junho e outra em dezembro – e, por causa da inclinação do eixo da Terra, um hemisfério do globo fica mais exposto à luz solar quando começa o verão, enquanto o outro fica menos, onde passa a ser inverno.

     

    “Após seis meses, a gente pode imaginar que a Terra está do outro lado do Sol e, com essa inclinação, é o outro lado que estará virado para o Sol”, explica.

     

    Em junho, o Hemisfério Sul é quem recebe menos incidência solar e, por isso, neste dia ocorre a noite mais longa do ano.

     

    Equinócio

    Segundo o astrônomo, conforme o planeta e o Sol vão se aproximando novamente, a duração das noites vai diminuindo até que as trajetórias atinjam o ponto mais próximo da Terra, quando dia e noite têm exatamente a mesma duração e os dois hemisférios são igualmente iluminados.

     

    Gonçalves explica, ainda, que esse fenômeno é chamado equinócio e também ocorre duas vezes ao ano – uma em setembro e outra em março – quando começam o outono e a primavera.

     

    A duração do ciclo completo até o próximo solstício de inverno acontece em 365 dias, 48 minutos e 46 segundos. Por causa dos minutos e segundos a mais, o calendário precisa ser ajustado a cada quatro anos, quando o ano bissexto soma 366 dias. (COM AGÊNCIA BRASIL)

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    1. Brucevetle on

      Balanset-1A: State-of-the-art Mobile Balancer & Vibration Analyzer
      Professional Dynamic Balancing Solution
      Balanset-1A stands as an advanced solution for vibration correction of rotors in their own bearings, created by Estonian company Vibromera OU. The device ensures professional equipment balancing at €1,751, which is significantly cheaper than traditional vibration analyzers while retaining high measurement accuracy. The system allows in-place balancing directly at the equipment’s operational location without requiring removal, which is essential for minimizing production downtime.
      About the Manufacturer
      Vibromera OU is an Estonian company concentrating in the creation and production of devices for technical diagnostics of industrial equipment. The company is incorporated in Estonia (registration number 14317077) and has representatives in Portugal.
      Contact Information:

      Official website: https://vibromera.eu/shop/2/

      Technical Specifications
      Measuring Parameters
      Balanset-1A provides precise measurements using a two-channel vibration analysis system. The device measures RMS vibration velocity in the range of 0-80 mm/s with an accuracy of ±(0.1 + 0.1?Vi) mm/s. The operating frequency range is 5-550 Hz with potential extension to 1000 Hz. The system supports rotational speed measurement from 250 to 90,000 RPM with phase angle determination accuracy of ±1 degree.
      Working Principle
      The device utilizes phase-sensitive vibration measurement technology with MEMS accelerometers ADXL335 and laser tachometry. Two single-axis accelerometers measure mechanical oscillations proportional to acceleration, while a laser tachometer generates impulse signals for computing RPM and phase angle. Digital signal processing includes FFT analysis for frequency analysis and proprietary algorithms for automatic calculation of corrective masses.
      Full Kit Package
      The standard Balanset-1A delivery includes:

      Measurement unit with USB interface – primary module with integrated preamplifiers, integrators, and ADC
      2 vibration sensors (accelerometers) with 4m cables (optionally 10m)
      Optical sensor (laser tachometer) with 50-500mm measuring distance
      Magnetic stand for sensor mounting
      Electronic scales for precise measurement of corrective masses
      Software for Windows 7-11 (32/64-bit)
      Plastic transport case
      Complete set of cables and documentation

      Performance Capabilities
      Vibrometer Mode
      Balanset-1A operates as a full-featured vibration analyzer with capabilities for measuring overall vibration level, FFT spectrum analysis up to 1000 Hz, calculating amplitude and phase of the fundamental frequency (1x), and continuous data recording. The system delivers visualization of time signals and spectral analysis for equipment condition diagnostics.
      Balancing Mode
      The device supports one-plane (static) and dual-plane (dynamic) balancing with automatic calculation of corrective masses and their installation angles. The unique influence coefficient saving function enables substantial acceleration of follow-up balancing of identical equipment. A specialized grinding wheel balancing mode uses the three-correction-weight method.
      Software
      The easy-to-use program interface provides step-by-step guidance through the balancing process, making the device accessible to personnel without specialized training. Key functions include:

      Automatic tolerance calculation per ISO 1940
      Polar diagrams for imbalance visualization
      Result archiving with report generation capability
      Metric and imperial system support
      Multilingual interface (English, German, French, Polish, Russian)

      Fields of Use and Equipment Types
      Industrial Equipment
      Balanset-1A is efficiently applied for balancing fans (centrifugal, axial), pumps (hydraulic, centrifugal), turbines (steam, gas), centrifuges, compressors, and electric motors. In manufacturing facilities, the device is used for balancing grinding wheels, machine spindles, and drive shafts.
      Agricultural Machinery
      The device provides exceptional value for agriculture, where continuous operation during season is vital. Balanset-1A is applied for balancing combine threshing drums, shredders, mulchers, mowers, and augers. The ability to balance on-site without equipment disassembly permits avoiding costly downtime during critical harvest periods.
      Specialized Equipment
      The device is effectively used for balancing crushers of various types, turbochargers, drone propellers, and other high-speed equipment. The RPM frequency range from 250 to 90,000 RPM covers practically all types of industrial equipment.
      Advantages Over Similar Products
      Economic Effectiveness
      At a price of €1,751, Balanset-1A delivers the functionality of devices costing €10,000-25,000. The investment pays for itself after preventing just 2-3 bearing failures. Cost reduction on external balancing specialist services amounts to thousands of euros annually.
      Ease of Use
      Unlike complex vibration analyzers requiring months of training, mastering Balanset-1A takes 3-4 hours. The step-by-step guide in the software permits professional balancing by personnel without specialized vibration diagnostics training.
      Portability and Independence
      The complete kit weighs only 4 kg, with power supplied through the laptop’s USB port. This permits balancing in field conditions, at isolated sites, and in difficult-access locations without external power supply.
      Universal Application
      One device is suitable for balancing the widest spectrum of equipment – from small electric motors to large industrial fans and turbines. Support for one and two-plane balancing covers all typical tasks.
      Real Application Results
      Drone Propeller Balancing
      A user achieved vibration reduction from 0.74 mm/s to 0.014 mm/s – a 50-fold improvement. This demonstrates the exceptional accuracy of the device even on small rotors.
      Shopping Center Ventilation Systems
      Engineers successfully balanced radial fans, achieving reduced energy consumption, abolished excessive noise, and increased equipment lifespan. Energy savings recovered the device cost within several months.
      Agricultural Equipment
      Farmers note that Balanset-1A has become an indispensable tool preventing costly breakdowns during peak season. Lower vibration of threshing drums led to reduced fuel consumption and bearing wear.
      Investment and Delivery Terms
      Current Prices

      Complete Balanset-1A Kit: €1,751
      OEM Kit (without case, stand, and scales): €1,561
      Special Offer: €50 discount for newsletter subscribers
      Volume Discounts: up to 15% for orders of 4+ units

      Purchase Options

      Official Website: vibromera.eu (recommended)
      eBay: verified sellers with 100% rating
      Industrial Distributors: through B2B channels

      Payment and Shipping Terms

      Payment Methods: PayPal, bank cards, bank transfer
      Shipping: 10-20 business days by international mail
      Shipping Cost: from $10 (economy) to $95 (express)
      Warranty: manufacturer’s warranty
      Technical Support: included in price

      Summary
      Balanset-1A represents an ideal solution for organizations seeking to deploy an effective equipment balancing system without significant capital expenditure. The device opens up access to professional balancing, allowing small enterprises and service centers to offer services at the level of large industrial companies.
      The mix of affordable price, ease of use, and professional capabilities makes Balanset-1A an indispensable tool for modern technical maintenance. Investment in this device is an investment in equipment reliability, decreased operating costs, and enhanced competitiveness of your enterprise.

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