Light. electromagnetic waves.
**but be careful. Light is also a particle AND a wave. The light particle is called a photon, and although it always travels at the same speed (the speed of light) it can have different wavelengths. This is why we still see light from the Sun and stars. There is no medium in space, but since light does not need a medium to travel through, light can be observed still from great distances in the universe.
Mechanical waves, such as sound waves and water waves, require a medium (solid, liquid, or gas) to travel through. Electromagnetic waves, like light and radio waves, do not require a medium and can travel through a vacuum.
Electromagnetic waves, such as light waves and radio waves, do not require a medium to travel through. These waves can travel through a vacuum, unlike mechanical waves which require a medium to propagate, like sound waves in air or water waves in the ocean.
Electromagnetic waves do not require a medium to travel through. These waves consist of oscillating electric and magnetic fields and can travel through vacuum. Examples include light waves, radio waves, and X-rays.
Electromagnetic waves, such as light and radio waves, can travel through space because they do not require a medium to propagate. These waves can travel through the vacuum of space and do not need a material substance to carry them.
(1) Electromagnetic waves, (2) gravitational waves.
Longitudinal
Mechanical waves, such as sound waves and water waves, require a medium (solid, liquid, or gas) to travel through. Electromagnetic waves, like light and radio waves, do not require a medium and can travel through a vacuum.
Electromagnetic waves, such as light waves and radio waves, do not require a medium to travel through. These waves can travel through a vacuum, unlike mechanical waves which require a medium to propagate, like sound waves in air or water waves in the ocean.
Electromagnetic.
Mechanical
Electromagnetic waves do not require a medium to travel through. These waves consist of oscillating electric and magnetic fields and can travel through vacuum. Examples include light waves, radio waves, and X-rays.
Electromagnetic waves don't need anything to travel. This kind of waves does not need a medium to move through, therefore they can even travel through outer space.
Mechanical waves require a medium, as opposed to electromagnetic waves which can travel through a vacuum.
Electromagnetic waves, such as light and radio waves, can travel through space because they do not require a medium to propagate. These waves can travel through the vacuum of space and do not need a material substance to carry them.
The only kind of wave that does not require a medium to pass through is an electromagnetic wave. These waves can travel through empty space and do not need a material medium for propagation. Examples of electromagnetic waves include light waves, radio waves, and X-rays.
(1) Electromagnetic waves, (2) gravitational waves.
Both P-waves (primary waves) and S-waves (secondary waves) can travel through solid and liquid materials. However, S-waves cannot propagate through liquids as they require a solid medium for transmission.