How do you explain light years?
How do you explain light years?
Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.
What is a light year simple answer?
Answer: A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second.
How many human years is a light year?
37,200 human years
Saying we were a space shuttle that travelled five miles per second, given that the speed of light travels at 186,282 miles per second, it would take about 37,200 human years to travel one light year.
How do we calculate light?
To calculate the distance of light, all you need to do is to multiply the speed of light by the number of seconds in question.
- Therefore: 1 light second = speed of light * 1.
- dL = ct.
- 1 light-year = 2.998 × 108 m/s * 60 * 60 * 24 * 365.25 = 9.46 × 1015 m.
Why do we measure distance in light years?
The main reason for using light years, however, is because the distances we deal with in space are immense. If we stick to miles or kilometers we quickly run into unwieldy numbers just measuring the distance to the nearest star: a dim red dwarf called Proxima Centauri that sits a mere 24,000,000,000,000 miles away!
How long would it take for a rocket to travel 1 light-year?
One light-year is miles. (That’s 5,878,499,810,000 miles, or nearly 6 trillion miles). So, it would take New Horizons 18,449 years to travel one light year.
How do you calculate light intensity?
Measure the distance between the light source and your point of interest. Use metric measurements. Convert the distance that you measured into meters. For example, if the point at which you want to calculate the light intensity is 81 cm away from the light source, report your answer as 0.81 meters.
How do you calculate general lighting load?
The general calculated load must be at least 100\% for the first 10kVA, plus 40\% of the remainder of the following loads: General lighting and receptacles: 3VA per sq ft. Small-appliance and laundry branch circuits: 1,500VA for each 20A, 120V small-appliance and laundry branch circuit specified in 220.52.