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While it’s not possible to completely prevent a fall, exercises that focus on balance and strength training can reduce the risk of falling. “We treat elderly adults for injuries sustained from falls, and other patients who feel unsteady while walking or standing and are fearful of falling,” says Lora Stutzman, a physical therapist with the Johns Hopkins Rehabilitation Network. “These exercises can help improve balance and build strength to help prevent future falls.”

For older adults, activities such as squatting, standing up from a chair and walking may be difficult or cause them to feel unsteady, which increases their risk of falling. The following exercises are intended for those who have a low risk of fall and are able to stand on their own without support from others. Always talk to your doctor or physical therapist first before starting new exercises, especially if you have weak balance.

Stutzman demonstrates two exercises below.

It will detect plasma in space and track it back to the Sun, planetary atmospheres, comet tails, and interstellar space.

NASA is working on a concept similar to a hidden decoder ring with which you can read a secret message containing significant information about the objects around you: where they originated from, why they are there, and what will happen to them in the future.

Now, consider the secret decoder ring, a sensor that can be launched into space to reveal secrets about matter in the solar system. Where did this matter come from, how did it get electrified, and how can it affect humanity on Earth and in space?

A detailed experimental analysis explains the forces by which a spinning magnet can cause another magnet to levitate in midair.

Magnetic levitation is common in floating trains and high-speed machinery, but two years ago, a new type of levitation was discovered that uses a rapidly rotating magnet to suspend a second magnet in the air. Researchers have now clarified that this phenomenon originates from slight tilts in the magnetic axes of the magnets relative to their rotational axes [1]. The research team’s experimental and theoretical work reveals surprises about how magnetic levitation works. The new technique could one day be used as a contact-free tool for manipulating objects.

If you bring together two toy magnets with their north poles facing each other, they will repel each other. You might be tempted to try and use that repulsion to counter the force of gravity by placing one magnet beneath the other. However, common experience shows that this balancing act is unstable.

Lawrence Livermore National Laboratory researchers have adapted their novel metasurface process to create an all-glass metasurface with birefringence, or dual refraction, properties. Learn how this achievement could transform waveplate technology for high-power laser systems such as the National Ignition Facility:


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