As the name white dwarf implies, this is a small type of star, and it has less surface area from which to radiate light, so even if it is hot, and giving off lots of light per square mile, there are fewer square miles than in larger, non-dwarf stars, so there is less total light being emitted.
While they are hot, white dwarfs are very small compared to other stars and therefore have a much smaller surface area fro which to emit light. Therefore the total amount of light they emit is relatively small.
White dwarf stars are the dead remnants of stars that were no larger than our Sun. While hot and bright, they are no longer producing new energy and are gradually cooling down to become "black dwarf" stars.
White Dwarf Stars are all small about the same size as the Earth and thus while their surfaces are hot, they do not radiate from a large surface area and thus appear dim from a distance.
Because they are small, usually about the size of the Earth and thus difficult to see.
A white dwarf is hot and dim because it is small, a small star is dimmer than larger stars.
A white dwarf is hot, but has a very small surface area compared to a main sequence star, which limits how much light it can produce.
A white dwarf star is the remaining core of a dead star, so it is extremely hot. The star is also dim because it is small, so it doesn't emit a lot of light in comparison to other stars.
Relative heat and distance - they're small.
Hot translates into color -- white hot. Dim is how much light reaches us.
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
That might be a white dwarf.
White dwarves.
A red dwarf can last for a trillion years, or for several trillion years, before it runs out of energy (and turns into a white dwarf). That is much longer than the current age of the Universe. In other words, red dwarves didn't yet have time to become white dwarves.
By residual heat - they have no fuel. See related question.
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
hot, bright stars
white dwarfs
white dwarfs
white dwarfs
That might be a white dwarf.
White dwarves.
White Dwarf Stars are very hot, like a ball of fire. They are dim because they are small and very far away.
they are too dim to fire the cones
They are called white dwarfs because when they form, although not replenishing their energy supply any more, they are still hot enough to shine. Overt time (a long time) however, they will cool down and become 'black dwarfs' which no longer emit light in visible wavelengths.
white dwarf
A red dwarf can last for a trillion years, or for several trillion years, before it runs out of energy (and turns into a white dwarf). That is much longer than the current age of the Universe. In other words, red dwarves didn't yet have time to become white dwarves.