Articles related to "Wavelength"

Young demonstrated a simple relationship between wavelength of light and the physical dimensions of the experimental setup, allowing for simple measurements of wavelength

Spectroscopy allows astronomers to deduce the chemical compositions of distant astronomical objects. What is astronomical spectroscopy and how does it work?

What is the electromagnetic spectrum? It consists of all types of electromagnetic waves, including radio waves, X & gamma rays, & visible, ultraviolet, & infrared light.

Often, people are confused when alternative practitioners describe the healing qualities of Reiki.

The Doppler effect works for both light and sound. In light the wavelength of a spectral line changes. For sound the pitch changes.

Many people have a general idea of what electron microscopy is but why would someone ever choose to use a scanning electron microscope?

With a digital camera, an infrared filter, and a tripod, creating unique and expressive infrared photos has never been easier.

Why is it, that if a person hides from us around the corner of a building, this person can still hear the sounds we make, even if there are no reflecting surfaces nearby?

Instead of optical telescopes, astronomers use antennas and computers to study the Universe at wavelengths invisible to the human eye. So, how does that work?

There are several different types of medical lasers that are used in dermatology and cosmetology. Skin laser surgery has grown in leaps and bounds during last 10 years.

Small particles in the atmosphere scattering light cause both sunsets and sunrises to be red.

Small particles in the atmosphere scattering light cause the blue sky.

Light pollution swamps out the light from deep sky objects, making it difficult to see them. But there are ways to make suburban astronomy more rewarding.

Coral fluorescence is a phenomenon with practical utility to the marine aquarist. It can be easily observed in the aquarium with the right equipment and knowledge.

The wavelengths of the electromagnetic radiation emitted by an ideal blackbody radiator depends only on the temperature.

When white light passes through a prism it spreads out into all the colors of the rainbow. Physics tells us this results from refraction and dispersion.

Ultrasound imaging is a safe noninvasive technique for making diagnostic medical images of the human body. What physics makes this technique work?

Scientists and amateur astronomers measure the composition, luminosity, and velocity of stars, galaxies, and nebulae using a technique called spectroscopy.

Sounds are pressure waves reaching our hearing apparatus by the movement of surrounding air molecules. Studying waves helps us to understand basic transport mechanisms.

Yet another large volcanic eruption has provided earth observers with valuable data of volcanic clouds in the atmosphere - the eruption of Okmok Volcano.

Microwave ovens cook food by agitating water molecules

Planck's revolutionary idea of describing light statistically rather than as a continuous wave seeded the birth of quantum physics.

Colors you choose for your wardrobe, the office, and your home all make statements about your personality.

The Martian sky is a pinkish yellowish color completely different from Earth's blue sky because of airborne iron oxide dust grains.

In addition to his work on relativity in 1905, Einstein published an explanation for the photoelectric effect that earned him the 1921 Nobel Prize.

Calming, warm waters of hot springs entice tourists to resorts. Bubbling mudpots and colorful hot springs are special volcanic features located around the globe.

Electrons can emit or absorb only specific amounts of energy to change orbitals and this energy change usually takes place via photons of light.

Toward the beginning of the twentieth century, the problems were beginning to mount for classical physics, paving the way for the new science of quantum mechanics.

Waves are ubiquitous in the study of physics, and we are intuitively familiar with them from a very early age, but what are they really?

Ultraviolet light, a frequency of sunlight, damages skin immediately and over time.

Good sun protection is more than just applying sunscreen during trips to the beach.

Salty water is a clear solution. Muddy water is opaque, because its coarser particles are a thousand times bigger than those of salt.

Bohr's atomic model explains how electrons jumping between orbits in atoms cause emission and absorption line spectra and why each element has its own spectral signature.

In early April 2007 astronomers announced the discovery of water on a planet orbiting the star, HD 209458. How is it possible to detect water on an extrasolar planet?

Purchasing one's first SAD light box to treat seasonal affective disorder sufferer can be confusing. The following no-nonsense information will prove useful.

Optical fibers can be used for a variety of measurement functions, including temperature, pressure, and humidity.

Physicists doing research in optics and metamaterials may someday move invisibility cloaking from the realm of fantasy and magic to the realm of science and technology.

In addition to visible light, astronomers study radio waves from the Sun, planets, stars, galaxies, and other celestial objects.

In the final years of the nineteenth century, a new problem came to light which threatened to question the very nature of physical theories since the time of Newton.

The classic, but disorienting red and blue 3D movies appear quaint compared to today's standards. Here's an overview of modern polarization technology in films.

The effects of laser light energy on skin structures depend upon the wavelength, power of density of the laser beam and the temperature generated at the site.

An examination of the physics behind energy secretary Steven Chu's proposal to paint roofs and roads white to slow global warming. Is it sensible or outlandish?

As part of his "Miracle Year" in 1905, Albert Einstein gave the new "quantum" ideas a jump start with his solution to a nineteenth century problem.

Mathematicians have been exploring the mysteries of music for centuries. The questions being asked are those which seek to better understand the perception of beauty.

Through the process of photosynthesis plants feed not only themselves but indirectly the rest of the living world.

Vesto M. Slipher was the first astronomer to measure the spectrum of an external galaxy. His work led to Hubble's discovery that the universe is expanding.

Researchers in American Universities have been developing precise mathematical formulations used to describe what is currently known about music, and to further human kno

The ash being emitted by the May 2008 eruption of Chaiten Volcano is detected using earth observing satellites

A team at the Idaho National Laboratories has developed an innovative method to manufacture nanoscale antennae at the right size to capture energy from the sun.

Evidence from three different spacecraft shows that the moon is not bone-dry as scientists once thought.