A flashlight Answer chemical, in a sealed environment.
Fruits and Vegetables rich in vitamin A are the best and safest source of photochemicals, of course if you payed attention in my class, then you would no need to ask this question.
i have no idea sorry but maybe if you go on a different website. and oh ily mi husbands Emma and skye and peeps that c this skye is a water monkey ? ily chookalicious ? mwh ?
It is the only source of light!
Wind [APEX]
The ideal light source would have high energy efficiency, long lifespan, and produce light that closely mimics natural sunlight.
I think that a screwdriver with a light source would be a marketable product. It would appeal to a wide range of professions. E.g. Joiners/carpenters.
It depends what angle the light is at, for example the shadow would be longer if the light was looking atr the object from the side (45 degrees) than it would be if looking at it from the top of the object(180 degrees).
I think the safest way is for the parents to drive them. second safest would be the bus, and the least safest way would be to walk, in my opinion
Generically, a power source (usually batteries), a light source (usually a light bulb), a switch to turn it on and off, and wiring of some sort to connect the energy source to the light source. Theoretically this is the minimum you would need to build a "flashlight".
solar
On our planet it would be, Sol, our sun.
They can make 60,000-100,000 but not on the safest job safest would be working auto body