Table of Contents
At what distance is a star if it has a parallax of 1 arcsecond?
3.26 light years
What is the distance to a star that has a parallax angle of 0.5 arc seconds?
What is the distance to a star that has a parallax angle of 0.5 arc seconds? Two parsecs.
Is it possible for a cool star to be brighter than a hot star?
The star appears brighter than Polaris. A cool star cannot be more luminous than a hot star. It can be more luminous if it is larger. Consider a star that has one-half the surface temperature and four times the radius of the sun.
What does stellar parallax prove?
Stellar parallax is the apparent ( relative ) angular displacement of the star, due to the displacement of the observer. The stellar parallax proves that the observer is moving.
Can cool stars be brighter than hotter stars?
A hotter star is more luminous than a cooler one of the same radius. A bigger star is more luminous than a smaller one of the same temperature.
Why is a star brightest at its coolest?
In a star like the sun it takes photons a million or more years to escape from their star. As fusion reaches it’s end the star expands and cools , this allows many more photons escape . Space is awash with these photons and the star is very bright because of it.
What color star is the coldest?
What is the largest human organ?
The skin is the body’s largest organ.
What is the heaviest human head?
The largest skull documented in medical literature belonged to a man with a cranial capacity of 1,980 cmÂ³ (120 inÂ³). Although the shape of his skull was normal, the cranial capacity of a human skull averages at between 950 “ 1,800 cmÂ³ (57.9 “ 109 inÂ³) depending on age and body size. Really?
Which organ has largest surface area?
Human skin, lung, and gut are generally considered to have the largest organs, but based on the classical perspective of their functions, skin has been considered to have the smallest surface area.
How much heat a human body generates?
The idea of converting human body heat into a form of usable energy has been targeted by scientists for years. A resting human male gives off roughly 100-120 Watts of energy. A very small fraction of this can be utilized by a thermoelectric device to power wearable devices.