You can't use spectrometers to detect black holes. Telescopes are the only way to detect them.
They use X-Rays from the stars being sucked into them.
Most of the methods to detect black holes rely on their gravitational effects. The following are ways in which black holes can be detected, at least in theory:Hawking radiation: This radiation would be way too weak to detect a stellar black hole, but it might be used to detect primordial black holes. This method hasn't been successfully applied yet; perhaps there are no primordial black holes.A black hole's gravitational effect on a neighboring object; for example, stars orbiting Sag A* make it possible not only to conclude that there is probably a black hole there, but also to estimate its mass (current estimate: about 4.3 million solar masses).Matter falling into the black hole will emit strong x-rays.An accretion disk around a black hole will heat up through friction, and also emit radiation.Gravitational lensing of objects behind the black hole also make it possible to detect a black hole in some cases (when there is a good alignment).
Since you can't see a black hole, scientists use a method called gravitational lensing to detect black holes. Since black holes warp space-time, the light that travels near a black hole is bent, like how a magnifying glass warps the object a little at the edges. Scientists look for unusual distortions of light caused by this effect to look for black holes.
Black holes does emit radiation, but they cannot be detected from earth. We use gravitational lensing to "see" the black holes.
No, black lightsd mainly detect body fluids, even if theve been wiped off or cleaned.
Use the gravity of the black holes
The way astronomers find black holes Is by using x-ray imaging from one of the many types of telescopes that orbit the earth. Black holes give off an incredible amount of x-ray waves. This is the only evidence I know of they use.
A spectrometer measures the wavelength, wave number, and photon energy of light. They are measurements of the type and energy levels of light.
i was doing this project for school. here was the info i found. black holes are black because no light can escape. because of that they are invisible. to see a black hole scientists use space telescopes and special tools to look at the stars. stars orbiting black holes act differently than other stars.
Use a UV light. The blood stain will appear black.
I can't comprehend how suction would work in a vacuum :-) Black Holes' use their gravitational force to pull matter into them.
There is no special machine that measures that directly. Astronomers have to observe objects known to be close to the black hole (most black holes observed are part of a binary or multiple system, simply because those are easier to detect), and use one of the usual methods used in astronomy to calculate distances.