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Does light need a substance to travel through?
No. It is radiation, not vibration. As electromagnetic energy, it can travel through a vacuum, and only through transparent or translucent material.
Do radio waves need a medium to travel through?
Radiation doesnt need a medium because it travels through space
What does radiation need to travel through?
Your question doesn't make much sense?! Radiation is what makes matter stick together, its in everything. So theoretically it doesn't need to pass through anything because its everything.
Can heat travel by convection through a vacuum?
No. Convection requires a carrier to convey the heat. Vacuum says there is nothing to do the conveying. Radiation does not need a convector, so heat can travel by radiation through a vacuum, like the radiation from the sun.
What materials can nuclear radiation travel through?
The heavier and denser the material the more radiation it absorbs. Alpha is stopped by thin sheets, in fact the skin stops it mostly so it does not penetrate the body. Beta and gamma are best stopped by lead or concrete. Neutrons are more penetrating, they need to be stopped by hydrogenous material. Concrete is effective but needs to be thick. Water itself is a good neutron shield, as are heavy plastics and waxes. So radiation can travel through light materials and gases (and a vacuum), with the proviso about neutrons as above.
Does light need a substance to travel through?
No. It is radiation, not vibration. As electromagnetic energy, it can travel through a vacuum, and only through transparent or translucent material.
Why can heat travel through space by radiation but not by conduction and convection?
For conduction and convection we need a material medium. But for radiation such a meaterial medium is not necessary. So in free space radiation can pass through easily.
Does sound need to travel through material?
Sound (and vibration) are a wave system of sequential compressions and rarefactions of a material. These waves are mechanical and do need a substance through which to travel. They cannot travel through a vacuum.
Do radio waves need a medium to travel through?
Radiation doesnt need a medium because it travels through space
Example of electromagnetic radiation?
Light is an example of electromagnetic radiation. EM radiation unlike other waves of energy doesn't need a medium to travel through hence why light energy can travel from the sun to the earth through the vacuum of space.
Difference between radiation and convection?
Radiation is when heat is transferred from one thing to another via electromagnetic waves like infrared. It can travel through a vacuum. Convection is when a fluid is heated from the bottom and rises, leaving colder fluid behind to be heated etc creating currents. The thing you are trying to heat has to be in contact with the heat source- it doesn't work through a vacuum.
What does radiation need to travel through?
Your question doesn't make much sense?! Radiation is what makes matter stick together, its in everything. So theoretically it doesn't need to pass through anything because its everything.
Can heat travel by convection through a vacuum?
No. Convection requires a carrier to convey the heat. Vacuum says there is nothing to do the conveying. Radiation does not need a convector, so heat can travel by radiation through a vacuum, like the radiation from the sun.
Does waves need a medium to travel through?
No. Electromagnetic waves travel through vacuum ( ie space where there is nothing)
What materials can nuclear radiation travel through?
The heavier and denser the material the more radiation it absorbs. Alpha is stopped by thin sheets, in fact the skin stops it mostly so it does not penetrate the body. Beta and gamma are best stopped by lead or concrete. Neutrons are more penetrating, they need to be stopped by hydrogenous material. Concrete is effective but needs to be thick. Water itself is a good neutron shield, as are heavy plastics and waxes. So radiation can travel through light materials and gases (and a vacuum), with the proviso about neutrons as above.
How do you know that heat is transferred from the sun to earth by radiation?
It cannot be transmitted by conduction nor convection because there is no material connection between the sun and the Earth. Conduction and convection need a medium through which to travel, and since the space between the Earth and the Sun is considered a vacuum, they cannot occur. However, radiation does not require a medium through which to travel. It can travel through a vacuum, and therefore space. Therefore, it's the only surviving option for heat transmission.
What type of wave does not need a medium to travel through?
It is electromagnetic radiation that needs no medium to travel in. Gamma rays, light and radio waves, all forms of electromagnetic radiation, can travel through the vacuum of space very well. In fact, they prefer it.
