Displaying results which match all of the below:
  • Alien

    "in space no one can hear you scream". Sound does not travel in a vacuum.

  • Black Hole

    An artists impression of a black hole, an area in space so massive, with gravity so extreme, that nothing can escape (not even light), swallowing a nearby star. Said to have been detected by Nasa's Chandra Observatory and the Hubble telescope

  • CAT (CT) scanner

    Computer (Axial) Tomography scanners take x-ray slices (tomographs) at mm distances along the body. The images taken can then be built up, using a computer, to produce a detailed (3D) picture. Sometimes a contrast dye is used to enhance the definition.


    Cosmic Microwave Background image from the COBE satellite. CMB is thought to originate from photons of light created just after the Big Bang and released as the Universe cooled. The wavelengths have been stretched and now shows up everywhere in the Universe a microwave radiation. Colour variations represent very small changes in temperature.


    More detailed CMB image with the signal from our Galaxy removed showing temperature fluctuations of +-200 microKelvin

  • Crab nebula

    A supernova remnant some 6,500 light years from Earth. Probably exploding in 1054 AD

  • Eagle nebula

    A region of current star formation, subject of the famous 'Pillars of Creation' photograph, some 6,500 light years away.

  • Electromagnetic Spectrum - Harm

    Chart detailing some of the harmful effects of the electromagnetic radiation.

  • Electromagnetic Spectrum - Uses

    Chart detailing some of the uses of electromagnetic radiation.

  • Energy diagrams

    Basic Energy (Sankey) diagrams for standard and energy efficient light bulbs

  • Energy Efficiency Rating

    Energy efficiency measured on a scale of A to G. Used for houses and electrical appliances

  • Energy Flow Diagram

    An energy flow diagram for the European Union 2006

  • Environmental Impact Rating

    Environmental impact. Measured on a scale of A to G. Used for homes

  • Galileo

    Portrait of Galileo Galilei. Oil on canvas by Domenico Tintoretto 1605-1606 from the photo gallery at the Museo Galileo, Florence, Itlay

  • Galileo's telescopes 1

    Galileo's telescopes in their glass case at the Institute e Museo di Storia della Scienza Firenze in Florence, Italy

  • Galileo's telescopes 2

    Galileo's telescopes alongside each other outside of their glass case at the Institute e Museo di Storia della Scienza Firenze in Florence, Italy

  • Hand held fluoroscope

    Photograph of a Patterson Hand Held Fluoroscope dating back to the 1920s. This was used to look at an x-ray source (a Crooke's Tube) with something held in front of it (hand).

  • Handout - Reflection

    Handout showing red laser light being reflected and refracted by a semicircular glass (plastic) block. Light is refracted at angles less than the critical angle and reflected at angles greater than the critical.

  • Handout - Refraction

    Handout showing red laser light being refracted by a semicircular block and an illustration of a spectrum being formed by refraction

  • Handout - Refraction (magic)

    Optical illusions using refraction

  • Handout - Scanning by reflection

    Some examples of where ultrasound can be used

  • Handout - Seismic waves

    Handout showing p and s waves and how they provide evidence for the structure of the Earth's interior.

  • Horsehead nebula

    Image from the Canada-France-Hawaii telescope in Hawaii. The horsehead is just a portion of the dustcloud.

  • Large Sun (Star)

    Stars with more than 5 times the mass of our Sun run out of fuel and form red supergiants with very hot cores, hot enough to produce Fe and Ni. Further layer will produce Si, S then O, Ne, Mg and finally Ne and He.

  • Life cycle of stars

    Image showing the life cycle of our Sun and more massive stars.

  • Neutron star

    Resulting from the death of massive stars 4 to 8 times the size of our Sun. A neutron star is so dense that on Earth one teaspoon would have a mass of a billion tons. Usually about 20km in diameter with a mass 1.4 times that of Earth.

  • Orion nebula

    Visible to the naked eye, just south of Orion's belt. 24 light years across and 1,500 light years away, it is the nearest stellar nursery to Earth with around 700 stars in all stages of formation.

  • Radiotelescope - Arecibo

    Picture courtesy of the NAIC - Arecibo Observatory, a facility of the NSF.
    The World's largest and most sensitive radiotelescope located in Arecibo, Puerto Rico.
    305m fixed reflecting surface suspended in a natural limestone sinkhole. The receiver is supported some 150m above. Used by, amongst others, SETI. Opened Nov 1963

  • Radiotelescope - Very Large Array

    Very Large Array in New Mexico is composed of 27, 25 metre diameter, antenna in a Y-shape formation, on rail tracks, electronically combined to give the resolution of an antenna 36 km across and the sensitivity of a dish 130m across.

  • Real image

    Diagram showing the creation of a real image and how the magnification can be calculated

  • Red giant

    At the death of a star of similar size to our Sun, the hydrogen runs out and the star starts to collapse. The core temperature rises as helium fuses to form Carbon, Nitrogen and Oxygen and the star swells.

  • Red Supergiant c.f. our Sun

    Nasa images compiled to give an indication of the relative sizes of our planets, Sun and other bodies such as Red Giants and a Red Supergiant (Betelguese)

  • Red Supergiant c.f. our Sun 2

    Indication of size:
    Sirius is the brightest star in the sky
    Pollux, about 34 light years away was the first star to be confirmed with an extrasolar planet.
    Aldebaran is a red giant about 65 light years away.
    Betelgeuse is a red supergiant, as is Antares

  • Renewable Energy Flow Diagram

    An energy flow diagram for Renewable Energy from the European Union 2006

  • Shoe fitting fluoroscope

    These machines were manufactured in St Albans in the UK and used in shoe shops right up until the 1970s

  • Sonar (ultrasound)

    Knowing the speed of sound in water, the formula speed = distance / time and a computer, it is possible to use ultrasound to produce an image of the sea bed.

  • Sources of infrasound

    Acoustic waves with low frequencies, below 20Hz, are called infrasound and are produced by a variety of natural and man-made sources. You could add to this picture: Animal communications and detection of animal movements.

  • Supernova

    An exploding star will supernova and this can last weeks or months. The resulting explosion can trigger new star formation.The last supernova to be seen in the Milky Way was in 1604.

  • Tectonic plate boundaries

    From the NASA Goddard Space Flight Center. Plate boundaries are shown in greeny-blue, earthquakes with yellow dots and recent volcanoes as red triangles.

  • Virtual image

    Simple diagram showing a virtual image seen in a mirror. It is not possible to project a virtual image.

  • Wave diagram

    Basic diagram of a wave. Amplitude = maximum displacement from the mid point, Wavelength = length/distance of a single wave, Frequency = number of waves passing a point per second. Speed of sound in air 330m/s. Speed of light in a vacuum 300,000,000 m/s

  • White dwarf

    A dying star, no longer undergoing fusion, with a mass similar to our Sun and a size similar to Earth. A White Dwarf will cool to a Black Dwarf.

  • Why telescopes in space ?

    Water vapour in the atmosphere absorbs infra red.
    Visible light makes it through the atmosphere but images are blurred
    The Earth's atmosphere blocks X-rays and gamma rays..

  • X-Ray body scan

    Actually a fake picture of what a full body scan might look like.

  • X-Ray of lorry

    An x-ray of a statue of Sheba (similar to the one at CERN) taken at the Rotterdam customs. The 9.3MeV source is strong enough to distinguish between a 1mm copper wire and 30cm of steel.

  • X-ray tractor