In radio electronics we abbreviate c to 300 000km/s (when working in kHz, different multipliers in other bands for easy maths). The number as it is is round enough when rounded to the whole hundred million for practical purposes with commodity hardware
We could redefine the metre to be 1.00069229...x it's current size (increase it by 0.69229...mm) to make the speed of light exactly 300 000 000ms-1. This would also change area and volume, and any other units that are derived from length
Remember that light in motion is electric and magnetic fields pushing and pulling each other along. Why that speed? Because it takes time for an electric field to create a magnetic field and vice versa
Our equations for EM waves (Maxwell's equations) predict light speed, and the same equations would predict c in any system, so long as reasonable values for the variables are known in that system
So 300 000 000 m/s isn't going to be a reasonable approximation of the speed of light in vacuum, but any alien that one about radio would probably have Maxwell's equations under some other name
On Wiktionary noun definition 4 for bug includes worm. It's an ancient word that has a variety of meanings, only one of which is the scientific definition. Does bug spray only kill insects in hemiptera? I thought it was mostly used on flies.
Worms are bugs too. The word is incredibly broad. Just because science uses it narrowly doesn't make bug a word with a narrow meaning. Most of us aren't entomologists
I ride a recumbent so stopping and chatting with other recumbent riders happens. One chap I chatted with had electrified his bike and was saying it was the only way he could still get out there and ride, the hills were too much for him otherwise. We're limited to 200W on a trigger operated e-bike here, so on most bikes that's just assist, so it's different to the American experience
My nearest park and ride is full every working day even now when some 40 to 60% of people have access to work from home (most of the population work for the government here) the park and ride carpark used to overflow into the suburban shop carpark next to it
Anyway it's full because parking there costs about $8 a day (in the form of a return bus ride), and parking in the city or the parliamentary triangle costs $15 or more
The problem most people have is the move that is impossible in a 3d Kline bottle - after you emerge from the orifice in the bottom you move onto the funnel, then into the bottle. You can only do that in 4d - or in experiential snapshots as you did. I'm sure there are animations that do it justice, but they would need to be 3d to do it well - it's hard to accurately represent 4d in 2d
I recently had this explained to me, terminal velocity is falling versus the force of the air pushing back on you, right? In vacuum you just keep accelerating, in atmosphere the air pushes back against you falling, limiting your speed
That force follows the rule that force (of air pushing back) is equal to acceleration (9.8m/s/s) times mass
So different weights fall at different speeds.
Half of the replies to me when I said what you said were
In radio electronics we abbreviate c to 300 000km/s (when working in kHz, different multipliers in other bands for easy maths). The number as it is is round enough when rounded to the whole hundred million for practical purposes with commodity hardware
We could redefine the metre to be 1.00069229...x it's current size (increase it by 0.69229...mm) to make the speed of light exactly 300 000 000ms-1. This would also change area and volume, and any other units that are derived from length