I'm definitely going to buy one of these bowls just for this highly useful feature...
If you don't live close to an IKEA store: https://www.amazon.com/dp/B00T5YMQIG/ref=cm_sw_r_sms_awdb_IY...
An Ikea Bowl Has Been Setting Things on Fire
21–30 of 132 posts
Re: An Ikea Bowl Has Been Setting Things on Fire
#22"Archimedes heat bowl" would be a better name,
Wikipedia: "The device, sometimes called the "Archimedes heat ray", was used to focus sunlight onto approaching ships, causing them to catch fire. "
Re: An Ikea Bowl Has Been Setting Things on Fire
#23The same phenomenon occurs with glass spheres. If you think about it it is obvious enough (most people are familiar with how a magnifying glass concentrates the ray of the sun in a single spot), but it is something people tend to overlook when employing glass spheres as elements of your interior design — e.g., glass door knobs, large marbles, and decorative knick-knacks (which people have a tendency to place on their…
You can even start a fire with a bottle of water in this fashion. I've done it!
Re: An Ikea Bowl Has Been Setting Things on Fire
#24The same phenomenon occurs with glass spheres. If you think about it it is obvious enough (most people are familiar with how a magnifying glass concentrates the ray of the sun in a single spot), but it is something people tend to overlook when employing glass spheres as elements of your interior design — e.g., glass door knobs, large marbles, and decorative knick-knacks (which people have a tendency to place on their…
Old overhead projectors used to have a big lens that focused the light from the lamp. I was present at a lecture where one spontaneously ignited because it was left standing (turned off) near the window where the sunlight was falling on it.
Big table-top loupes for fine electronics work are similar fire hazards. Ours now all have shutters and big warnings that the shutter must be closed when not in use.
Re: An Ikea Bowl Has Been Setting Things on Fire
#25The same phenomenon occurs with glass spheres. If you think about it it is obvious enough (most people are familiar with how a magnifying glass concentrates the ray of the sun in a single spot), but it is something people tend to overlook when employing glass spheres as elements of your interior design — e.g., glass door knobs, large marbles, and decorative knick-knacks (which people have a tendency to place on their…
A filled water bottle with a rounded top burned a hole in my dads car seat...
Re: An Ikea Bowl Has Been Setting Things on Fire
#26Reminds of this (sadly discontinued) project: http://www.photongrill.com/
Re: An Ikea Bowl Has Been Setting Things on Fire
#27Feature. Not a bug.
Basically, it's a marketing/naming problem. They should sell it as an eco-friendly fire starter.
Re: An Ikea Bowl Has Been Setting Things on Fire
#28I own one of these! Anyone on HN have ideas for pyro fun?
Re: An Ikea Bowl Has Been Setting Things on Fire
#29Works also with skyscrapers: http://www.bbc.com/news/uk-england-london-23930675
Same architect did the same thing with their previous building, then didn't learn their lesson.
Re: An Ikea Bowl Has Been Setting Things on Fire
#30Works also with skyscrapers: http://www.bbc.com/news/uk-england-london-23930675
Beat me to it.
Reminds me of https://twitter.com/ThePracticalDev/status/68767208615275315...