Ada beberapa bangunan yang terlihat dari angkasa yang jauhnya ratusan kilometer dari bumi. Para astronom yang bertugas di luar angkasa mengungkapkan mereka bisa melihat beberapa bangunan tanpa alat bantuan apapun.
“Garis Karman merupakan perkiraan wilayah yang menunjukkan ketinggian di mana satelit bisa mengorbit Bumi tanpa terbakar atau jatuh dari orbit sebelum mengelilingi Bumi setidaknya sekali,” jelas Katrina Bossert selaku fisikawan luar angkasa Arizona State University, dikutip dari Live Science.
Namun Namun tembok China, salah satu bangunan terbesar dunia, tidak masuk dalam daftar yang terlihat dari luar angkasa. Ini diakui oleh Mantan Komandan Stasiun Luar Angkasa Internasional (ISS), Chris Hadfield.
Menurutnya tembok besar China terlalu sempit terlihat dari luar angkasa. Bangunan itu juga mengikuti kontur serta warna alami dari geografi sekitarnya.
Berikut daftar bangunan yang bisa dilihat dari antariksa dengan mudah, dirangkum CNBC Indonesia.
1. Palm Jumeirah Dubai
Palm Jumeirah merupakan pulau buatan di Dubai. Pulau-pulau tersebut bisa terlihat dari Garis Karman. Bahkan stasiun ISS yang berada di ketinggian 400 km di atas permukaan laut juga bisa melihatnya.
Namun di ISS butuh alat bantu. Astronaut di sana melihatnya dengan menggunakan lensa 800 mm.
2. Piramida Giza
Khusus untuk Piramida Giza terdapat dua pendapat soal penampakannya di luar angkasa. Astronaut asal Inggris, Tim Peake mengatakan bangunan itu tidak terlihat, namun struktur masifnya bisa terlihat dengan lensa 800mm.
Sebaliknya, mantan astronaut NASA dan komandan ISIS bernama Leroy Chiao mengatakan piramida dapat terlihat dari orbit. Bahkan bisa dilihat jelas dengan mata telanjang.
“Ada banyak yang bisa dilihat dari ISS, bahkan dengan mata telanjang,” ucapnya. “Misalnya pernah menemukan piramida besar dengan telefoto dan bisa memilih dua yang besar dengan mata telanjang, selama pencahayaan dan kondisi cuaca baik, sebagai dua titik kecil.”
3. Three Gorges Dam
Three Gorges Dam merupakan bendungan raksasa di Sungai Yangtze China. Tingginya mencapai 185 meter dan panjang lebih dari 2 km.
Bangunan itu merupakan fasilitas penghasil listrik terbesar dunia. Three Gorges Dam juga menjadi bendungan pembangkit listrik tenaga air termahal yang pernah dibangun
4. Bingham Canyon Mine
Tambang ini juga bisa dilihat jelas dari luar angkasa. Letaknya berada di 32 km tenggara Salt Lake City.
Bingham Canyon jelas terlihat dari Garis Karman tanpa alat bantu. Selain itu juga bisa dilihat dari pesawat ulang alik yang terbang 305-531 km di atas permukaan laut.
How to Prevent Dangerous Imbalance and Extend Equipment Lifespan?
Vibration issues in industrial machinery lead to increased wear, higher energy costs, and unexpected failures. Balanset-1A is a professional portable balancer and vibration analyzer designed to detect and correct imbalance in rotors, fans, turbines, and other rotating equipment.
Why choose Balanset-1A?
– High-precision vibration diagnostics
– Easy-to-use software
– Compact and portable design
– Two kit options to meet your needs:
Full Kit on Amazon: Balanset-1A device, Vibration sensors, Software & mounting accessories, Hard carrying case
Price: 2250€
OEM Kit on Amazon: Balanset-1A device, Basic sensors, Software
Price: 1978€
Ensure longer equipment lifespan and reduce costly downtime with Balanset-1A.
Balanset-1A: Revolutionary Portable Balancer & Vibration Analyzer
High-precision 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 provides professional equipment balancing at €1,751, which is substantially less expensive than traditional vibration analyzers while maintaining exceptional measurement accuracy. The system allows in-place balancing directly at the equipment’s installation site without requiring dismantling, which is vital for preventing production downtime.
About the Manufacturer
Vibromera OU is an Estonian company concentrating in the design and manufacturing of instruments for technical diagnostics of industrial equipment. The company is incorporated in Estonia (registration number 14317077) and has branches in Portugal.
Contact Information:
Official website: https://vibromera.eu/shop/2/
Technical Specifications
Detection Parameters
Balanset-1A provides precise measurements using a dual-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 functional 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 uses 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 rotation frequency and phase angle. Digital signal processing includes FFT analysis for frequency analysis and custom algorithms for automatic computation of corrective masses.
Full Kit Components
The standard Balanset-1A delivery includes:
Measurement unit with USB interface – central module with embedded preamplifiers, integrators, and ADC
2 vibration sensors (accelerometers) with 4m cables (alternatively 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
Functional Capabilities
Vibrometer Mode
Balanset-1A operates as a comprehensive vibration analyzer with abilities for measuring overall vibration level, FFT spectrum analysis up to 1000 Hz, determining amplitude and phase of the fundamental frequency (1x), and continuous data recording. The system provides visualization of time signals and spectral analysis for equipment condition diagnostics.
Balancing Mode
The device supports single-plane (static) and two-plane (dynamic) balancing with automatic calculation of corrective masses and their installation angles. The unique influence coefficient saving function enables substantial acceleration of subsequent balancing of identical equipment. A dedicated 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 specific 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 successfully employed 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 represents special value for agriculture, where uninterrupted operation during season is essential. Balanset-1A is applied for balancing combine threshing drums, shredders, mulchers, mowers, and augers. The ability to balance on-site without equipment disassembly enables eliminating costly downtime during busy harvest periods.
Specialized Equipment
The device is successfully 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 virtually all types of industrial equipment.
Superiority Over Similar Products
Economic Efficiency
At a price of €1,751, Balanset-1A delivers the functionality of devices costing €10,000-25,000. The investment breaks even after preventing just 2-3 bearing failures. Cost reduction on outsourced balancing specialist services totals thousands of euros annually.
Ease of Use
Unlike complicated vibration analyzers requiring months of training, mastering Balanset-1A takes 3-4 hours. The step-by-step guide in the software enables professional balancing by personnel without special vibration diagnostics training.
Mobility and Autonomy
The complete kit weighs only 4 kg, with power supplied through the laptop’s USB port. This allows balancing in outdoor conditions, at distant sites, and in inaccessible locations without separate power supply.
Versatile 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 common 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 outstanding accuracy of the device even on small rotors.
Shopping Center Ventilation Systems
Engineers successfully balanced radial fans, achieving decreased energy consumption, removed excessive noise, and extended equipment lifespan. Energy savings offset the device cost within several months.
Agricultural Equipment
Farmers note that Balanset-1A has become an essential tool preventing costly breakdowns during peak season. Lower vibration of threshing drums led to lower fuel consumption and bearing wear.
Cost 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
Bulk Discounts: up to 15% for orders of 4+ units
Acquisition Options
Official Website: vibromera.eu (recommended)
eBay: trusted 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 stands as an optimal solution for organizations aiming to deploy an successful equipment balancing system without substantial capital expenditure. The device democratizes access to professional balancing, permitting small enterprises and service centers to deliver services at the level of large industrial companies.
The mix of reasonable price, ease of use, and professional capabilities makes Balanset-1A an vital tool for modern technical maintenance. Investment in this device is an investment in equipment stability, reduced operating costs, and improved competitiveness of your business.