In the 1989 movie Back to the Future Part II, hoverboards went from being a fanciful invention to a reality. The technology, which uses the repulsive force of superconductors and magnets, is still far from being practical, but it could be a revolutionary form of transportation in the future.   Back to the Future Part II, released in 1989, follows the main character as he travels in a time...

This article begins with the definition and origins of electricity, the phenomenon first discovered by the ancient Greek philosopher Thales, the invention of the voltaic cell that made electricity practical, and the development of electric current, motors, and communication technology. It also discusses how the study of electricity and electronics will continue to improve our lives.   Today...

Human memories are formed through the workings of the nervous system, and how long they last depends on repetitive stimuli and changes in synapses. Short-term memories are chemical changes, but when they are converted into long-term memories through repetition, structural changes occur in the nerve cells that make them last longer.   They say that humans are animals of forgetfulness. Some...

Since the Industrial Revolution, humanity’s reliance on fossil fuels has led to energy depletion and environmental challenges. Metal organic frameworks (MOFs) are gaining traction as a solution, with potential applications in areas as diverse as hydrogen storage and radioactive material removal.   The Industrial Revolution in the mid-18th to early 19th centuries led to a revolutionary...

Computers have evolved from mechanical calculators to modern high-performance computers. From vacuum tubes, transistors, and integrated circuits to artificial intelligence, they’ve come a long way, and the pace of progress is accelerating as they’re used in a variety of fields. Let’s take a look at the functions, components, and types of computers, and explore the possibilities...

While the Apollo 11 moon landing has been accepted as a historic event, some people have raised conspiracy theories claiming that it was fabricated. They presented a variety of evidence, but scientific refutations and evidence have gradually dispelled the conspiracy theories.   There are many events and accidents in the world, and there is always a reason behind them. Reasons are the means...

I sometimes feel like an extra in my fast-paced life, not the main character. I reminisce about my past relationships with friends through the American sitcom FRIENDS and feel lonely, unable to share my heart in real life. Now I realize the need to break free from the shackles of the past and become an adult.   When I look at the people around me, I realize that life is really like a high...

Dental implants are a procedure that restores the function of a damaged tooth, and their success depends on the patient’s oral condition and health. Care before and after the procedure is important, and as the technology improves, it is expected to become a more trusted treatment.   As we enter an aging population, bone health is becoming increasingly important. Dental health, in...

Car noise is generated by the engine, tires, air resistance, and more, which can be distracting and cause fatigue while driving. To reduce it, sound-absorbing materials, sound insulation, and active noise control systems are used. Electric vehicles are quieter and generate a virtual engine sound for pedestrian safety.   When you walk along a busy road, the noise from a large number of cars...