Vegetables That Are Fruits Botanically: What Counts?

Many foods commonly called vegetables are fruits in botanical terms, including tomatoes, peppers, cucumbers, eggplants, pumpkins, squash, and avocados. A fruit develops from a flower’s ovary and usually contains seeds; “vegetable” is a practical culinary label for edible plant parts, not a precise botanical category. Why the Names Differ Botany and cooking sort plants for […]

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Two Types of Transformers: Step-Up and Step-Down

The two basic types of transformers are step-up transformers, which raise alternating-current voltage, and step-down transformers, which lower it. Both transfer electrical energy between circuits through electromagnetic induction; the difference is the turns ratio between their windings. Why Transformers Are Classified This Way A transformer is an electrical device that changes voltage in an alternating-current

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