Monday, 11 December 2006

Lemon Zoom

Lemon Zoom

The "model" in this picture is Dewi, or often called Dew Dew. We were at the Pacific House in South Melbourne for Carla's farewell. The picture was taken with a zoom technique where the lens was rotated while the shutter was pressed. It was a real luck shot. The picture turns out interesting due to all the newspaper clips behind her which add the zooming effects. I noticed that this effect works well for a single subject framed with many complicated environment and lighting.

The lemon (Citrus × limon) is a hybrid citrus tree of cultivated origin. The fruit are used primarily for their juice, though the pulp and rind (zest) are also used, primarily in cooking or mixing. Lemon juice is about 5% citric acid, which gives lemons a sour taste and a pH of 2 to 3. This acidity makes lemon juice a cheap, readily available acid for use in educational chemistry experiments.

A lemon tree can grow up to 10 meters (33 feet), but they are usually smaller. The branches are thorny, and form an open crown. On a lemon tree, flowers and ripe fruits can be found at the same time.[1]

Lemons grow in tropical and sub-tropical climates and cannot withstand frosts and very cold temperatures. Their favored temperature is between 15–30 °C (60–85 °F) and they need ample quantities of sunlight. They thrive in fertile, well drained soils, but are notable for tolerating very poor, infertile soil, such as sand. [2] Lemons need plenty of water but should be allowed to dry out between waterings. Lemons are grown commercially in Spain, Portugal, Italy,Turkey, and other Mediterranean countries. They are also grown in Argentina, India, Brazil and the United States. They can be grown as plants in a garden as well as indoors in containers, if they are pruned to keep a small form.

Lemons and other citrus fruits contain amounts of different chemicals and are thought to have some health benefits. They contain a terpene called limonene which gives their characteristic lemon smell and taste. Lemons contain significant amounts of citric acid, this is why they have a low pH and a sour taste. They also famously contain Vitamin C (Ascorbic acid) which is essential to human health. 100 milliliters of lemon juice contains approximately 50 milligrams of vitamin C (55% of the recommended daily value) and 5 grams of citric acid.

A common school experiment involving lemons is to attach electrodes and use them as a battery to power a light. The electricity generated may also be used to power a motor to move the lemons (on wheels) like a car or truck. These experiments also work with other fruit like apples and with potatoes.

(courtesy of

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