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How much of the energy in a filament lamp is lost through heat?
In a filament lamp, most of the energy is lost as heat rather than light. It's estimated that about 90% of the energy is dissipated as heat, while only about 10% is transformed into visible light.
What type of radiation does a heat lamp produce?
Much of the radiation created by a heat lamp is infrared electromagnetic radiation. A heat lamp is generally designed not to emit too much visible light, but is set up to emit most of its radiation in the red and "below red" (infrared) areas of the spectrum.
How much heat does it take to melt 2 kg of mercury?
The heat required to melt 2 kg of mercury can be calculated using its specific heat capacity (0.14 J/g°C) and its melting point (−38.83°C). The formula Q = mcΔT can be used to find the heat needed, where Q is the heat, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
How much electrons in mercury?
Mercury has 80 electrons.
Why do mercury expand when heated?
When you heat a material, you cause the molecules to vibrate with more kinetic energy. So think of the mercury as a group of people standing as close to each other as possible. If you add heat to this group (which can be represented by the people starting to wiggle their bodies and flail their arms) the group will start to take up more and more space depending on how much extra wiggling they do. This is a good comparison to the molecules of mercury. As they are heated, they vibrate with larger oscillations. This will mean they need more room to "wiggle", hence the mercury will expand.
Can a lava lamp give off heat like can it heat up a cold room?
One lamp won't do much. I have 10 and my room is always really hot when they are all on
How much of the energy in a filament lamp is lost through heat?
In a filament lamp, most of the energy is lost as heat rather than light. It's estimated that about 90% of the energy is dissipated as heat, while only about 10% is transformed into visible light.
How far mercury expands when heated?
It depend upon the temperature how much you heat it
Will a egg cook faster under a blow dryer or lamp?
An egg will cook quicker under a blow dryer than a lamp because a blow dryer will transfer heat much quicker than a lamp.
What type of radiation does a heat lamp produce?
Much of the radiation created by a heat lamp is infrared electromagnetic radiation. A heat lamp is generally designed not to emit too much visible light, but is set up to emit most of its radiation in the red and "below red" (infrared) areas of the spectrum.
Where should permanently installed ceiling heat lamp be installed in a bathroom?
This is old school technology and hasn't been done for years in construction. What used to happen, the bathroom being a small room didn't have much ceiling area. Centrally locating the heat lamp fixture to a good position sometimes positioned the fixture in the radius of the in-swinging bathroom door. On many occasions the door was left under the heat lamp with the lamp on and the door caught fire from the build up of heat from the lamp. The electrical code made a revision to keep the fixture out of the arc radius of the door and this made for some strange locations of the fixture. The installing of heat lamp fixtures has just gone out of favour. It has been replaced with in floor heating in bathrooms.
Why mercury's surface temperature varies so much from day to night?
The night side of Mercury is not receiving any direct sunlight. Because Mercury is so close to the sun, the day side of Mercury has a significant increase in heat.
Why is venus more hoter than Mercury?
Venus is hotter than Mercury because of its thick atmosphere composed mostly of carbon dioxide, which creates a strong greenhouse effect. This traps heat inside the planet, leading to extreme surface temperatures that are hotter than Mercury, despite Venus being further from the Sun. Mercury, on the other hand, has a very thin atmosphere that cannot retain heat as effectively.
How much does a lamp costs?
It depends on what type of lamp you want.
What happens if you use a mercury source instead of sodium vapour lamp in diffraction grating experiment?
sodium vapour lamps produce much higher light output (about 90 lumens/watt) they cannot be used in lighting applications where colour-rendering property is very crucial. This is because most of the light emitted from a sodium vapour lamp is concentrated in the yellow part of the visible spectrum (around 580-590 nm) On the other hand, a mercury vapour lamp is quite suitable for lighting applications. This is because, the mercury vapour lamp can feed almost the entire visible region (380-780 nm) of the human visual system.
How much heat does it take to melt 2 kg of mercury?
The heat required to melt 2 kg of mercury can be calculated using its specific heat capacity (0.14 J/g°C) and its melting point (−38.83°C). The formula Q = mcΔT can be used to find the heat needed, where Q is the heat, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
What is the working temperature of mercury lamp?
The peaks of the emission from the ionized vaporof mercury are:-- 184.5 nm . . . UV-C-- 253.7 nm . . . UV-C-- 365.4 nm . . . UV-A-- 404.7 nm . . . violet-- 435.8 nm . . . blue-- 546.1 nm . . . green-- 578.2 nm . . . yellow-orange.The quantum wavelength of the lamp itself is much shorter than any of those.
