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A flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (Potassium Carbonate)
A flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (Potassium Carbonate)
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Lead (II) bromide precipitate, formed as potassium bromide is dripped into lead (II) nitrate solution
Lead (II) bromide precipitate, formed as potassium bromide is dripped into lead (II) nitrate solution
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Fire is the process of combustion, where a material is combined with oxygen, giving off heat, light and flames
Fire is the process of combustion, where a material is combined with oxygen, giving off heat, light and flames
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Animation of the flow of blood through a blood vessel.
Shown are red blood cells (erythrocytes, red), which transport oxygen, white blood cells (leucocytes, white), part of the immune system, and platelets (thrombocytes, yellow), which are active in blood coagulation (clotting)
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Frontispiece of Isaac Newton's 'Opticks', with a spectrum of light cast upon it by a rotating prism above.
Opticks (1704) was Newton's second book on physics, after his renowned 'Philosophiae Naturalis Principia Mathematica' (1687). Opticks discussed colour, diffraction and the properties of light
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Spinning gyroscope, top view.
A gyroscope is a spinning disc mounted in gimbals, whose rapid spinning means it resists changes to its spin axis caused by the movement of its frame. This is due to the conservation of angular momentum. Gyroscopes are used in guidance...
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Extreme Close Up hand-held - A brain-eating amoeba burrows into a brain and replicates in a computer-generated animation.
Extreme Close Up hand-held - A brain-eating amoeba burrows into a brain and replicates in a computer-generated animation.
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'Renaissance Man' Premiere
Danny DeVito at the 'Renaissance Man' Premiere on May 31, 1994. (Footage by WireImage Video/Getty Images)
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Potassium metal reacting with water.
The reaction produces hydrogen gas and potassium hydroxide. The heat of the reaction ignites the hydrogen gas produced, which burns with a lilac flame. The indicator phenolphthalein has been added to the water, which turns pink due to...
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A flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (Potassium Carbonate)
A flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (Potassium Carbonate)
Getty Images
Plasma energy. Plasma is a gas in which some of the particles are ionized, which means it is electrically conductive and responds to electromagnetic fields
Plasma energy. Plasma is a gas in which some of the particles are ionized, which means it is electrically conductive and responds to electromagnetic fields
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A flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (Potassium Carbonate)
A flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (Potassium Carbonate)
Getty Images
Gastrotrich moving through organic matter underwater. Gastrotrichs are microscopic animals common in all aquatic environments, typically living amongst soil or sand particles. They have a pair of glands used in adhesion to these particles, one of which se
Gastrotrich moving through organic matter underwater. Gastrotrichs are microscopic animals common in all aquatic environments, typically living amongst soil or sand particles. They have a pair of glands used in adhesion to these...