What can we learn from looking at the light from stars?

What can we learn from looking at the light from stars?

From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star. The spectral line also can tell us about any magnetic field of the star. The width of the line can tell us how fast the material is moving. We can learn about winds in stars from this.

What is normal engine vacuum?

Normal Engine: On a good engine, accelerate to around 2000 RPM and then quickly release the throttle. The engine should snap right back to a steady 17- 21 “hg vacuum. Steady low between 5-10 “hg vacuum: This indicates that the engine’s intake manifold or the intake gasket is leaking.

Why does vacuum increase with RPM?

The vacuum created by the piston pulls air from outside, through the intake, into the cylinder. As the throttle blades open, restriction and vacuum are reduced. This allows more air/fuel into the cylinder and rpm increases.

Why does vacuum go down when rpms go up?

Re: why does vacuum go down when rpms go up? It’s called Bernoulli’s Law. The speed of air increases when air flows through a venturi (a thing that is kind of shaped like a hourglass). Air pressure decreases as the air speed increases.

Is vacuum higher at idle?

1) At idle, the more vacuum the better. 2) The highest manifold vacuum will be on deceleration. 3) A closed throttle will create more vacuum than an open throttle.

What causes vacuum leaks?

The most common cause of a vacuum leak is a broken tube or hose, but many parts within your engine can wear out and throw off the air/fuel ratio. Several regulators and valves require a vacuum source to operate properly and gaskets/seals help keep the system airtight.

Can you use WD40 to find a vacuum leak?

A: Yes. You can use regular WD40 to detect vacuum leaks. The impact it has on the engine may not be as dramatic as carb cleaner or starting fluid, but it will still work.

Can a vacuum leak affect the transmission?

A vacuum leak will cause the engine performance to suffer, causing possible load and throttle position issues, which could indirectly affect transmission shifting. …

Can fuel pump affect transmission?

Reduced fuel flow, from a bad fuel pump or a plugged fuel filter will greatly reduce power. Many times a plugged catalytic converter or an engine misfire is the problem. The transmission wont shift to the next gear. Erratic shifting is many times an electrical problem, outside of the transmission.