When activated by light, they generate active oxygen species that interact with biomolecules and damage cancer cells. This process is the foundation of photodynamic therapy, a cancer treatment ...

Some types of lung cancer can be treated with a cancer-killing drug that works when it is combined with the power of light energy. This one-two punch is called photodynamic therapy, or PDT.

In simple terms, the green laser acted more like an object, not a beam of light, creating what by all accounts could be described as a shadow. The researchers suggest this is because of "optical ...

Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow.

To ask if a beam of light can make a shadow sounds like a sort of Zen paradox, but physicists have demonstrated the possibility. They used a laser beam ... in Renaissance art, and Eratosthenes ...

For the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue ...

A common method is to encode data in laser light and send it through optic ... is in this case like a hurricane that occurs in a beam of light, where a calm and dark centre is surrounded by ...

Prototype quantum photonic-dimer laser uses entanglement to bind photons and deliver a powerful beam of concentrated light that can shine through adverse weather like thick fog. When you purchase ...

Vector illustration strobe light stock illustrations Laser light show. Bright led laser beams, dj light party. LED... Spotlight icon. Light projector for stage signs. Searchlight in the theater symbol ...

A NASA spacecraft has beamed a near-infrared laser nearly 10 million miles into space breaking new ground for the agency. The laser, which is encoded with test data, was fired from NASA’s Psyche ...