Bikenda microwave snow removal and essential oil diffuser - Page 1
Forum section: electronics / general

author: Kasper
author_rank: Frequent Contributor
timestamp: October 23, 2023, 03:16:34 pm
content: This claims it can melt about 2 feet of snow (a long blizzard) from a car while powered only by a small solar panel."500+ bought in the past month" - Amazonhttps://www.amazon.ca/Electromagnetic-Molecular-Interference-Antifreeze-Instrument/dp/B0CJ7Q1NDY?th=1QuoteQuote from: reviewer

author: SiliconWizard
author_rank: Super Contributor
timestamp: October 26, 2023, 09:33:00 pm
content: Apart from the electromagnetic black magic, "if the car is exposed to a blizzard environment for a long time," how is the solar panel ever going to power anything?

author: Haenk
author_rank: Super Contributor
timestamp: October 27, 2023, 07:26:39 am
content: I wonder if this *could* actually have some effect after all. Of course not any of the crazy product claims, but consider this: This device spreads out an oily film all over - won't that have an effect on the surface of e.g. your windows (from the inside only, of course)?I'm not sure, what the effect will be, though. Maybe the surfaces will be more sticky, i.e. more dust attached, i.e. faster crystallization? Or the opposite is true? Smoother surface, slower or even no crystallization?I'm sure there is way more science hidden behind this device than the fraudsters ever did imagine

author: Kleinstein
author_rank: Super Contributor
timestamp: October 27, 2023, 03:25:38 pm
content: An oily surface may be water repelling and may thus reduce fogging a little.Still well places in the dodgy section.

author: Nominal Animal
author_rank: Super Contributor
timestamp: October 29, 2023, 09:25:06 pm
content: To melt 11 kg of pure snow or ice, you need to spend 1 kWh of energy (about 3.7 MJ or 3700 kilojoules). That's just the enthalpy of fusion, with no temperature change.You can "melt" snow by adding salt (or other additives), which lowers the melting temperature of the mixture; this is viable down to about -10°C / 263 K / 14°F.Mechanical snow and ice removal requires much less energy. The easiest, in my opinion, is a tarp; one without metal grommets, and just woven belt loops at the edge for good grip. Small tabs in car undercarriages (pointing towards the center) would make fitted tarps easy to use, but I haven't seen them in the wild. For people of limited physical strength, a small electric winch designed to work off of your car battery in very cold conditions would be nice.It is very difficult to stop ice crystals from forming on surfaces, because air contains water vapor; it isdeposition(phase transition directly from vapor to solid) and involves no liquid phase. Even coatings that fully repel water don't really work, although anti-icing coatings do exist that reduce it somewhat. The airplane industry has spent a lot of money working on this.

author: TimFox
author_rank: Super Contributor
timestamp: October 29, 2023, 10:00:51 pm
content: Similarly, to lift mechanically 11 kg of snow by 1 meter during snow removal requires only:W=m g h= 11 kg x 9.8 m/s2x 1 m = 108 J = 108 W-s of energy (or work).

author: amyk
author_rank: Super Contributor
timestamp: December 13, 2023, 06:19:10 am
content: bigclivedotcom debunks these: