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Why the Mercury-in-glass thermometer first descends and then rise when put in flame?
When placed in a flame, the glass bulb expands rapidly. This increases the volume of the bulb and so the column descends. However, the glass then conducts the heat to the mercury so that it undergoes thermal expansion and the column rises.
How many atoms of mercury are in a light bulb?
Compact fluorescent light bulbs contain mercury. (For that reason, it is important to be very careful with a broken compact fluorescent bulb, because mercury is highly toxic.) Most other kinds of light bulbs do not contain any significant amount of mercury.
Is the external bulb of a thermometer also made of mercury?
The red liquid in a thermometer is Mercury, which is usually encased in a glass tube
What observe when slowly squeezed and released the bulb field with water?
When you slowly squeeze and release the bulb filled with water, you will observe that the water inside the bulb will be pushed outwards when squeezed and then flow back into the bulb when released. This is due to the pressure exerted on the water inside the bulb, causing it to move in and out of the bulb.
What is a similarity in the line spectrum of mercury and the spectrum of the fluorescent bulb?
A fluorescent lamp contain mercury so the identities of spectrum are normal.
Why does mercury level goes down for a very short time when a mercury-in glass thermometer is placed in hot water?
The exterior of the bulb of the thermometer expands first, resulting in the mercury level to go down. After that the mercury in the bulb expands more than the glass bulb, resulting in the subsequent rise of the mercury level.
Why a column of mercury in theromometer first descends slightly and then rises when placed in hot water?
It is due to expansion of glass bulb.
What will happen if you hold a mercury thermometer from its bulb?
is it dangeorous to hold a thermometer from its bulb
Does the bulb placed in series with bulb lightens with dc?
yes we can bulb placed in series with dc
Why does bulb of a clinical thermometer break when placed in very hot water?
becuse alla does it
Pressure bulb can you use a sodium bulb in a mercury fixture?
no
What do you need to make a wet bulb theremometer?
A wet bulb thermometer, simply has the sensitive bulb, dampened with water.A small muslin bag with wick attached, is placed over the bulb. The wick is placed in a small container of water, which must be periodically topped up.The water around the bulb evaporates, giving a cooling effect. As the water evaporates, more is drawn via the wick from the reservoir.The amount of evaporation, will depend on the water saturation already in the atmosphere. By comparing the temperature with a normal thermometer and reading the results in a table, the dew point can be found.
What is the fluid in a fluorescent light bulb?
In a fluorescent light bulb there is usually a drop of mercury. That mercury vaporizes as the bulb warms up and it becomes gaseous, enhancing the electron interaction through the bulb, making it brighter.
What are the Sources of error in distillation?
boiling chips are not added to the distillation flask. the thermometer bulb is placed in the boiling liquid. the water to the water-jacketed condenser is not turned on.
Why does a fluorscent light not work in the cold?
fluorescent bulbs have mercury in them. There are heaters at the ends of the bulb that vaporizes the mercury to allow the light to be produced ( the fluorescence on the inside of the bulb is what actually glows). If the bulb is cold you do not get the ionization of the mercury to cause the fluorescent powder inside the bulb to glow, or it just glows a small amount.
What does the gas discharge bulb contain?
Mercury.
Can you replace just the bulb on a headlight of a 1998 Mercury Mountaineer?
Yes , according to the 1998 Mercury Mountaineer Owner Guide : ( the headlight bulb is # 9007 )
