Caption: Close-up timelapse footage of the petals of a Torenia fournieri flower in a solution of alkaline sodium hydroxide, showing the change in colour. The pigment chemicals in this flower act as a natural acid-base indicator, here seen to change colour to yellow in the presence of an alkali. This clip has been sped up 40 times. See clip K004 5182 for the flower in an acid.

Release details: Model release not required. Property release not required.

Keywords: 4k, acid-base, alkali, alkaline, base, basic, beautiful, beauty, botanical, botany, changing, chemical, chemistry, close-up, colour change, demonstrating, demonstration, detail, education, flower, indicator, macro, magnified, natural, ph, purple, reactant, reacting, reaction, science, scientific, sodium hydroxide, sped up, speeded up, timelapse, torenia fournieri, uhd, yellow

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Torenia flower in alkali

K004/5183 Rights Managed

Downloadable master

Duration: 00:00:17

Frame size: 1920x1080

Frame rate: 23.98

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 554.1M


Capture format: Panasonic GH4

Frame size: 3840x2160

Codec: H.264

Please contact Science Photo Library if you require the original, or other formats.


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