what is a bosh head in laboratory apparatus?
917442
its a lens to a microscope
16323
No, the condenser is what focuses your light source onto the specimen.  The eyepiece is what you look through.
374481
It is quite normal. I use this process a lot for creating hydrogen in my lab for demonstrations. I fill up balloons and blow them up. Students love it.The black precipitate is a complex hydroxide of sodium and aluminum.
969915
yes its it called the scannig electron microscope I believe
196910
Here is the definition for boma: enclosure
500529
None. Oh and what's this doing in the zoology section?
751749
balances, beakers, and pipettes.
166803
There are two chambers.  Each uses flow cytometry, meaning the cells are lined up and pushed along tubing passed a light source.  The light is picked up on a detector.  When a cell passes by, the light flow is interrupted and it causes a "blip" in the detector.  The size of the "blip" is proportional to the size of the cell.\nIn one chamber, the red cells are counted.  The detecter is set to count only the cells that fall with in the size limits of Red Blood Cells.\nIn the other chamber, the blood is put into a solution that lyses the red blood cells leaving only WBC and platelets intact.  The detector is set to count cells that fall in the platelet range and  in the WBC range of sizes, nuclei size and shape is also detected here and is used to differentiate one type of WBC from another.  It also quantifies hemoglobin here with spectrophotometry.
544046
they are called suckers on the ends of the tube feet.  they are controlled by the water-vascular system in echinoderms, such as starfish.  \n\ngood luck with the dissection!  i did it a few weeks ago...make sure to check out the two stomachs!!
959381
It will vary between different manufacturers. There will also be variation between similar beakers.\n\nYou need to measure the mass of the beaker in the lab, before you begin.
464821
http://www.bodine-assembly.com/
278453
The thing you are asking about is called an abacus (or Soroban in Japan).  \n\nThe beads on the abacus slide up and down on what we call rods which are divided horizontally by a reckoning bar (some call this the beam). In general, the single row of beads above the reckoning bar (called "Heaven Beads") are worth 5. The beads below the reckoning bar (called "Earth Beads") are worth 1. A bead is said to "have value" when it is pushed towards the middle reckoning bar and "loses value" when moved away from the middle reckoning bar. Forming a number on the abacus is very simple – simply move a bead towards the reckoning bar for it to "have value". \n\nSince no beads are touching the middle reckoning bar, we read a number of 0 all the way across the abacus. This is a "cleared" frame and it is how you normally start every math problem (similar to a reset on a modern calculator). To clear a Soroban – you simply tilt it towards you so that all the beads are pulled by gravity towards the bottom of the frame (this clears the lower beads only!) and then level the instrument again and make a sweeping motion of your index finger between the reckoning bar and the upper row of beads – this will cause them to "push" upwards away from the reckoning bar. It's almost as if you were splitting the beads from the reckoning bar with a parting sweep of your finger. You could just move them up individually with a flick of your index finger – but the sweeping method from left to right is very fast and efficient once you get the hang of it.\n\nWe use these dots on every third column to designate a "unit" rod. You should place your number so that the unit portion falls on this rod (for example ,in the number 1234 the value 4 is the "units", 3 is the "tens", 2 is the "hundreds", etc). Use rods to the right of this unit rod as tenths, hundredths, and rods to the left as tens, hundreds, thousands (which also has a unit dot – very convenient!). It doesn't matter which dot you choose to be the unit rod – so long as it is marked with a dot for easy reference. Numbers can be formed on the abacus anywhere you want – and with some problems (like multiplication and division) there will be two or three sets of numbers on the abacus frame. Do not think of the dot as a decimal point – that might get confusing as to whether that rod is representing the value just before the decimal point or just after it. It is a unit rod – and rods to the right have a factor of 10 less value and rods to the left have a factor of 10 more.\n\nThis is just enough information to understand the way numbers are formed on the frame.  After understanding this, you can add, subtract, multiply or divide by performing equivalent operations on the abacus.  At an advanced level, you can also extract square roots, use decimals for multiplication and division, perform operations on negative numbers etc.
236138
http://albumen.stanford.edu/library/monographs/sunbeam/chap45.html\n___________\nthis one seems to have a lot of them, too\nhttp://scphillips.com/units/convfact.html
334748
Typically labs have densitometers for gel electrophoresis analysis.  There has also been increasing use of capillary electrophoresis systems for IFE/s and SPE.
7783
The head is a Class 1 laser diode fed by a constant current source of typically 20-50mA.  The beam is focused onto the CD surface and reflected back onto a photodiode with a risetime of 10nS or better.  The digital output signal is fed to a decoder and then to an amplifier.\n\nConcerning drives, the disc is spun at a constant speed by a pulse-feedback servomechanism.  The head travels radially much like the head on a harddisk.
158584
Try,\n\nhttp://www.personal.psu.edu/faculty/d/x/dxh40/MBLemma.pdf
1179614
testubes are for small samples, most commonly liquids, but you could put solids in there too. with centrifugal force, you can seperate solutions.\n\nflasks are for larger samples.\n\nthey're both for containing liquids and solids available for testing. they're both transparent so you can see any colors changes or changes in states of matter. they're both easily put over a burner so reactions involving heat can occur.