How can you keep a candle lit in a glass cover from going out?

Because the space of the glass cover is limited, the air and oxygen inside are also limited, so it is easy to extinguish the candle when lit, and if two vents are added, the candle will not be easy to extinguish.

If you want to keep the candle lit in the glass cover from extinguishing, you must have some ventilation measures, and if it is sealed, it will definitely be extinguished.

To light a candle in the glass cover, you must ensure that there is air in the glass cover to ensure that the candle is not extinguished, and there is no way to burn the candle without air.

If you want to make the candle lit in the glass cover go out better, just block the place where there is air, and the candle will go out naturally if there is no air.

If you want to light a candle inside, if you want not to extinguish it, of course, it will not be extinguished if it is in a vacuum, and if it enters the air, it will be extinguished as soon as the wind blows, and in the case of a vacuum, it will not be extinguished.

The candle inside the glass cover will not be extinguished, because the inside of the glass cover is windproof, so no matter how strong the wind is, the candle will not be extinguished.

If you light a candle in a glass cover, carbon dioxide will be produced due to lack of oxygen, and if you want it to be extinguished, you will have to inject oxygen.

This point keeps its air, and a lot of times as long as there is air flowing, then it won't go out, and you have to learn to give it a little gap.

Break away from Zhao Li and light the candle, you let him have enough oxygen in the candle, and he will not extinguish it.

If you light a candle in the glass cover, it should be the exhaust hole that the glass cover will vacate.

How can a little candle in the glass cover not be extinguished, and I don't quite know how to change it?

Blowing air on the bottle creates a low pressure behind the bottle, and the surrounding air tries to balance the low pressure, at which point the flame is blown out by the resulting air current. That's why people don't take shelter from the cold behind advertising columns. Because it will be blown away there.

Blow on the ground and the air will speed up and the air will rush straight forward. Touching the bottle.

The air flow will be split into two parts by the bottle, and after flowing from the left and right sides of the bottle, it will merge and move forward to extinguish the candle. In order to make the magic more effective, you need to place a large bottle in front of the candle, and then the magician has it, and the air flow can really pass through the bottle to extinguish the candle, thank you for adopting.

Answer: The long one dies first.

The reason is as follows: the burning of candles produces carbon dioxide, and although carbon dioxide is denser than air, due to combustion, the temperature inside the glass cover is high, and the carbon dioxide gas will rise due to the high temperature and collect in the upper part of the glass cover.

The carbon dioxide concentration in the glass cover gradually increases from the bottom up, and the air content gradually decreases, so that the long candle will be extinguished first because it is exposed to more carbon dioxide. Short candles, on the other hand, are located in the lower part of the glass cover, and the air content is relatively high, because the nanometer will be extinguished after this meeting.

Long and short candles are placed in a glass cover and the long candle is extinguished first, because the temperature of the carbon dioxide produced is very high, its density is less than that of the air, and the carbon dioxide is squeezed downward after being hindered by the bottom of the beaker, while the height of the long candle is higher than that of the short candle.

A candle is an everyday lighting tool that is mainly made of paraffin wax; Moreover, the candle is easy to melt, the density is less than that of water, it is difficult to dissolve in water, it melts into a liquid state when heated, it is colorless and transparent and slightly volatile when heated, and it can smell the unique smell of paraffin orange and silver of the round hand banquet; When cold, it solidifies into a white solid form, with a slight special smell of potato plum.

If the cup is covered with a lit candle and there is a gap between the cup and the tabletop, here are three reasons why the candle might go out:

1.Insufficient air supply: Candles need oxygen in the air to keep burning. When the cup covers the candle, if there is a gap between the cup and the tabletop, the outside air may not be able to enter the cup smoothly, so that the oxygen supply required for combustion is insufficient, causing the candle to go out.

2.Heat loss: The cup acts as an insulating layer to limit heat loss.

However, if there is a gap, the heat inside the cup may escape through the gap, reducing the temperature around the candle. When the temperature drops to a certain level, the flame of the candle may weaken or extinguish completely.

3.Unstable support: If the gap between the cup and the table top is large, the cup may not be able to hold firmly above the candle and can be easily pushed by a slight wind or other external force, which will cause the cup to leave the candle and cause it to go out.

Please note that these are possible causes in general and are not absolute. Specific results can be affected by the size of the gap, air flow, and other variables. Ignite.

Wipe the glass with a damp cloth first, then use a clean damp cloth dipped in a little white wine and rub it on the glass with a little force. After wiping, the glass is clean and bright. You only use a spoonful of shampoo with a little water or shampoo after washing your hair, wipe the window with a cloth, and then wipe the window dry with a dry cloth or paper, and the window will become bright, beautiful and clean.

1) When there are traces and oil stains on the window glass or glass mirror, you can use a cloth or cotton to drip a little kerosene or liquor, and wipe it lightly, it will be clean and bright. (2) If there is dirt on the frame, image frame or glass plated with gold edge, you can wipe it with a towel dipped in beer to remove the dirt and make it clean and shiny. (3) Paint and dirt on the glass and mirror, which can be easily wiped off with vinegar.

4) Use a soft cloth or soft paper, soak it in water with alcohol or liquor, wipe the mirror first, and then use a clean rag dipped in some chalk to wipe it again. (5) When scrubbing the glass, first apply chalk ash water or gypsum powder water, and then wipe it with a dry cloth after drying, which is easy to wipe off the dirt and easy to polish. (6) Put some indigo in the water to increase the luster of the glass.

7) Wipe off the dust with a damp cloth first, and then rub the waste newspaper into a ball and wipe it on the glass, the ink of the newspaper can quickly wipe the glass clean. (8) If there is a large area of oil stain on the glass, first scrub it with waste gasoline, then scrub it with washing powder or detergent, and then rinse it with clean water. (9) Traces of wax on the glass plate or mirror can be scrubbed with hot soapy water with a few drops of ammonia.

Be careful not to allow water to penetrate the back of the mirror, as this will erode the back paint and destroy the reflective layer. (10) Wipe the glass window with onion slices, which can not only remove dirt, but also be particularly bright. (11) Scrub mirrors, glass, etc. with residual tea to remove stains.

Haishi is the complete opposite of the Rakshasa country, with beautiful scenery and handsome characters. Under the introduction of the third prince of Dongyang, Ma Ji was recruited by the dragon king as a concubine and married a beautiful dragon princess. Ma Ji and the princess drove the golden dragon horse to the Rakshasa country to pick up Sister En, but found that Sister En was killed by Rakshasa officers and soldiers.

The oxygen in the cup is depleted.

Because the candle needs oxygen to burn, and the gas in the cup cannot communicate with the atmosphere after the glass is closed, the oxygen content in the cup is limited, and the candle cannot continue to burn after the oxygen is exhausted.

Moreover, the exhaust gas produced after combustion has a higher temperature and less density, which will stay above the cup, preventing the cold air below from reaching the top of the cup to provide oxygen to the flame!

The long candle goes out first.

Because the temperature of the carbon dioxide generated is very high, its density is less than that of air, and it will rise upward, and after being hindered by the bottom of the beaker, the carbon dioxide is squeezed downward, and the height of the long candle is higher than that of the short candle, so the carbon dioxide touches the long candle first, that is, the long candle is extinguished first.

1. When the candle is burned, the products of combustion are carbon dioxide and water. Chemical expression: C25H52+O2 (ignition) CO2+H2O.

2. CO2 chemical properties: one of carbon oxides, is an inorganic substance, non-flammable, usually does not support combustion, and is non-toxic.

Baking soda and vinegar undergo a chemical reaction to produce carbon dioxide than in the air, and the candle is first extinguished due to lack of oxygen. The carbon dioxide produced by the burning of candles is concentrated in the upper part of the cup due to the higher temperature and light weight, so the higher candle is extinguished first.

Long candle bai

Extinguish first. Because of the generated du

The temperature of carbon dioxide is very high, its density is smaller than that of air, it will rise upward, and after the weight is hindered by the bottom of the beaker, the carbon dioxide is squeezed downward, and the height of the long candle is higher than that of the short candle, so the carbon dioxide touches the long candle first, that is, the long candle is extinguished first.

Candle Test Steps:

1.An ordinary candle is cut into 4 small segments of varying lengths and shortness, and divided into groups A and B, the length of group A candles is 1cm and 2cm, and the length of group B candles is 2cm and 4cm respectively.

2.Two sets of candles are placed upright on a glass plate, and the two candles in each group are spaced about 5cm apart and lit.

3.It can be covered with a laboratory glass bell (inner diameter 12 cm, height 16 cm), or a 500 1000 ml beaker instead, or a transparent plastic Coke bottle with the upper part cut off and used upside down (the truncated part must be smooth).

Experimental phenomenon: The short candles of group A were extinguished first, and the long candles of group B were extinguished first.

Notes:1Make sure that each candle has the same core length so that the flame size is the same.

2.When covering a candle with a glass jar, the two candles should not be too close to the side wall of the jar, and the glass jar should not be moved too much.

Because the carbon dioxide produced by combustion has a high temperature and low density, it is not easy to settle to the bottom of the beaker, but gathers in the upper part of the beaker to cause the long candle to go out first, and the long candle goes out first because the density of CO2 becomes larger after heating, the CO2 rises, and there is no combustible material above, so the long candle is extinguished first.