What app can identify a given picture?
Reverse Image Search From TinEye is pretty Good.
What apps can identify a song based on my humming or singing a part of the song?
MidomiAds by GoogleMidomi is a neat well-designed website and a unique search engine that’s powered by your voice. Thevoice search takes up just a corner because Midomi also has a large community of music lovers behind it. Midomi’s ultimate goal is to build the most comprehensive database of searchable music, part of it with user contributions.ShazamShazam is a song identifier app (and also works like a tagging app) you can carry along in your smartphone. Shazam is supported on iPad, iPhone and iPod Touch, Android, Blackberry, Nokia, and Windows Phone 7. With Shazam you can simply hold your phone up to the song to identify the track, buy it, check out the videos, and share it with friends. Unlike Midomi however, you have to play the track for Shazam to identify it with a tag – humming won’t cut it.MusipediaMusipedia is a melody search engine. As the site explains (to search a tune) – probably of the three, Musipedia gives you the best search combo to find a song if you can’t place it by name. You can use the available online tools like the Flash or Java based piano; you can draw notes with your mouse; whistle a tune into the mic; search by tapping the rhythm with the keyboard; use the Parson’s code; or simply use old-fashioned text search.The collection of tunes, melodies, and musical themes is freely editable by anyone. The site welcomes contributions to build-up the database.Hope it was helpful :)
Determine the charge on the metal cation in these compounds. (Type your answer using the format +1 and -2.)?
Pd = +4 Mn = +4 Cu = +2 Pb = +4 Ti = +4 the whole compound has to be neutral, so do the math since c2o4 = -2 , O2 = -2, NO3 = -1, and Cl = -1, CO3 = -2, taken from the periodic table
Strange Shiny Black Rock Found In Backyard?
Anthracite can have a very shiny luster, it does not have to be dull like the example picture that was posted. It can have blue tint when the light hits it as well. Also, anthracite can have the same conchoidal fracture that obsidian has so that is not very diagnostic in this situation. Because anthracite is metamorphosed it is very hard to get it to ignite. If you can get it burning it will display a blue flame with little to no smoke. Good luck!! It could be either rock. If you are really curious as to what it is, take it to a local university and have a geologist look at it. With a picture you will never get a 100% positive answer, to properly identify a rock the person needs to see it in person to assess textures, colors, and other diagnositic features. =)
How do index fossils determine the age of rocks?
They don't. Absolute ages are given by dating methods, such as C14, Ar/Ca, OSL, and O16/O18.Fosils only give us relative antiqueness. They tell us whether a rock is older than, or younger than another.How do we know they're younger? That is decided by looking at the rocks themselves! I know, seems contadictory, but it’s really not that hard to understand once you dig into it. The information given by these fossiles serve mostly for when you can't tell which rock is older just by looking at them.You use rocks to determine the relative antiqueness of fossils, and then you use said fossils to determine the relative antiqueness of exceptional rocks.Stratigraphy has a couple of principles. For the effects of this answer, I will cite two.The content of each layer varies vertically, in a way that the most recent stuff always ends on top, and can be identified at considerable distances. This is the faunistic succession principle.Sediments get deposited horizontally until interrupted. Such is the principle of original horizontality.What paleonthologists do is basically look at the layers, and see that Ammonites are on top of Trilobites, therefore, based on those principles, they conclude that Trilobites must be older.Now you have the relative antiqueness of those fossils. Trilobites are older than Ammonites.What do we need that for? Exceptional cases where sedimentary layers end up torn, or at incredible distances where the sedimentary layers themseves don't appear to be exactly the same.If a rock looks like this:And there's a Trilobite in the center and an Ammonite in the outmost layer, you know based on your previous inferences which layer is younger than the rest.And if you find a rock with exactly the same fossil content as another in a distant country, you know that they belong to the same time period.That's what relative antiqueness is for.The example I used is real btw. Trilobites and Ammonites are excelent index fossils of the Paleozoic and Mesozoic period respectively.
What is the purpose of using a cobalt glass in identifying metals present in a mixture of Na and K salts?
An intense yellow flame confirms the presence of sodium ions. The presence of potassium ions is indicated by a pale violet flame which appears reddish-violet through cobalt glass. In a mixture that may contain Na and K salts, it could be difficult to see the pale violet flame of potassium through the intense yellow flame of sodium. For identification of potassium, it is necessary to view the flame through an optical filter to eliminate as far as possible the colors due to sodium, calcium, and other interfering ions.