A vacuum bell jar is placed on a base which is vented to a hose fitting, that can be connected via a hose to a vacuum pump. A vacuum is formed by pumping the air out of the bell jar. The lower edge of a vacuum bell jar forms a flange of heavy glass, ground smooth on the bottom for better contact.

As the air is pumped out of the sealed bell jar, the sound from the bell jar fades. However, the sound is not audible to our ears because of the vacuum inside the jar. This demonstrates that the sound wave cannot travel through vacuum. That is, a sound wave needs a material medium for its propagation.

The bell jar is an inverted glass jar, generally used to display an object of scientific curiosity, contain a certain kind of gas, or maintain a vacuum. For Esther, the bell jar symbolizes madness.

Plants can grow well in glass containers. Plants can be grown almost anywhere in the house. A glass container or jar provides clarity — which lets you see the plant roots as they shoot. It will need more water and fertilizer than other plants do, but they do not require a lot.

Don’t try to grab your plant and pull it straight out of the pot, as you may damage the plant’s stems and leaves. Instead, place your hand around the plant’s base at the soil level and, using your other hand, turn the entire pot upside down. Allow the force of gravity to gently ease the plant out of the pot.

Indoor Plants You Can Grow in Jars and Bottles

• Herbs. Herb varieties like basil, parsley, oregano, rosemary, chives, dill, cilantro, thyme, mint, and watercress can be grown in mason jars and glass bottles easily.
• Pothos.
• English Ivy.
• Wandering Jew.
• Watch Chain Plant.
• House Holly Fern.
• Cactus.
• Aloe Vera.

Cut a stem of mint around 15cm in length. Place the stem of mint in a clean glass of water out of direct sunlight. If the weather is hot try placing half a cut bottle over the top of the plant to create a terrarium effect. Watch it grow!

You can find mint growing indoors in a pot of soil or even in a bottle of water. If you wish to grow mint plants in water, simply take tip cuttings of about 5 to 6 inches (13-15 cm.) in length from an established mint plant. Remove the bottom leaves and place the cuttings in a water-filled glass or bottle.

Most herbs can be grown in containers indoors and many of the non-woody, tender varieties such as cilantro, parsley, basil and marjoram can thrive in smaller pots, even in mason jars.

How to tell if mint is bad or spoiled? Mint that is spoiling will typically become soft and discolored; discard any mint that has an off smell or appearance.

According to cosmetic chemist Kelly Dobos, peppermint oil is comprised of about 30-50 percent menthol – which lends it its cooling sensation – and should be used sparingly. “Like many essential oils, it can be a skin irritant so care should be taken when using products containing peppermint oil,” Dobos said.

Because of anti-inflammatory properties, the spice acts on acne scars and can also clear the face. Grind a few fresh and clean mint leaves, with a little bit of water and add just a dash of turmeric to the mix. Apply this face pack on your skin and leave it on for about 15 minutes, before washing it off.

3. Low calories: The herb is effectively low in calories. Two tablespoons of fresh peppermint provides only 2 calories, which makes them an ideal herb to be used in a weight loss diet.

Mint: An herb, yes, but this one goes the extra belly-fat burning mile. Mint leaves trigger the release of extra bile from the gallbladder, which is important because it helps the body to digest fat.

How To Prepare:

1. With the help of mortar and pestle, grind the ginger and dry mint leaves.
2. Now, take a saucepan and add water to it. Add both ground ginger and dried peppermint leaves to it and let it boil for 3 to 4 minutes.
3. Remove from flame and add fresh peppermint leaves.
4. Strain the drink in a cup and drink warm.