mcs ta science misconceptions

8/9/2019 Mcs Ta Science Misconceptions

1/32

Science is built up offacts, as a house is built of

stones; but an

accumulation of facts is nomore a science than a

heap of stones is a house.

Henri Poincare (1854-11!"

Science an# h$pothesis(1%5"


2/32

&h$ 'irfoils &or

)ernoulli *s +eton

+ee#less to sa$, the #isareement is mo#ern;

airfoils #i# not eist in +eton or )ernoulli/s time


3/32

&h$ 'irfoils &or

+eton supporters sa$01. n or#er for the airfoil to o up,

air must be re#irecte# #on (2r#

3a of otion".!. herefore, the anle of attacis important because air thathits the bottom of the in ets

bounce# #on.2. (6nstate#" he top of the in

pla$s no role.

76

76,)6

3SS

H'+ H'39

H S:7

9'3S


4/32

&h$ 'irfoils &or

)ernoulli supporters sa$01. he air is re#irecte# up on top of

the in.

!. hat air tra*els a loner #istance.2. he air must come bac aroun# to

meet the air on bottom in the same

time.

4. herefore the air on top tra*els

faster

5. )$ )ernoulli/s e


5/32

&h$ 'irfoils &or

he truth is that the 2r#

3a of otion an# the)ernoulli ffect are both rele*ant.

t is true that air is force# #on (#onash",but this is mostl$ #ue to a spee#in up of

the air on top of the in, hich is a)ernoulli ffect phenomenon.

he effect is so

pronounce#, that airpassin o*er the in

actuall$ passes aroun#

the in in a shorter time

than air passin un#er the

in.


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7/32

&h$ 'irfoils &or

t shoul# be note# that ins are three#imensional ob@ects.

he #onash is stronest near the bo#$of the plane an# eaest at the

intips.

his effect pro#uces*ortices in the

#onashmore info:

http://www.av8n.com/how/htm/airfoils.html
http://www.av8n.com/how/htm/airfoils.htmlhttp://www.av8n.com/how/htm/airfoils.htmlhttp://www.av8n.com/how/htm/airfoils.html


8/32

he ?orilois ffect


9/32

he ?oriolis 9orce

&hen eplainin #rainin sins, tubs,

an# toilets, the influence of the

?oriolis 9orce is *er$ small.

he shape of the bol, the location ofthe #rain, an# ho the bol is fille#

#etermine the #irection hich ater

flos out of e*er$#a$ ob@ects.

httpBCC.ems.psu.e#uCDfraserC)a#C)a

#?oriolis.html


10/32

instein Sai# t

)eare of the ar ain

ffect. Sa$ins are

sometimes attribute# to a

person ho is thouht to

be itt$, ise or ho is

alrea#$ etensi*el$


11/32

instein Sai# t

&hich of these cannot be foun# amoninstein/s ritinsF source: The Quotable Einstein, edited byAlice Calaprice

1. maination is more important thannole#e.

!. 9e people are capable of epressin ithe


12/32

instein Sai# t

f $ou are reall$ intereste# in hatinstein sai#, recommen#B

'lbert instein, 1#eas an# :pinions

f $ou are onl$ intereste# in


13/32

&eihtless in space

're astronauts eihtless hen

the$ are in orbit aroun# the arthF


14/32

' icrora*i*t$ n*ironment

'n 'stronaut/s eiht is #efine#as the ra*itation force actinbeteen the astronaut an# the

earth. 6sin +eton/s 3a of 6ni*ersal

>ra*itation, the eiht of a

% (15% lb" astronaut orbitin at4%% m is 121 lb (88I of hisChereiht on arth"


15/32

he 'ppearance of

&eihtlessness

'stronauts appear to be

eihtless because, @ust lie the

spaceship the$ are in, the$ are in

freefall.

f ra*it$ stoppe# in space, ho

coul# the arth/s moon influence

the ocean/s ti#esF


16/32

arth


17/32

sunami Pre#iction

sunami #etection is possible, but arra$sof such s$stems are *er$ epensi*ean# ma$ not be orth the cost in alloceans.

Ei# $ou no that the Sumatraearth


18/32

&e onl$ use 1%I


19/32

6sin our brains

&e use 1%%I of our brains.

Eifficult to trac #on the source

of this number.

his number is often reference#

hen eplain the Supernatural

abilities of ps$chics

httpBCC.csicop.orCsiC%2Cten-

percent-m$th.html


20/32

ntellient Eesin an# *olution

$th L1B ntellient Eesin is a unitar$i#ea.

7ealit$B t can be0

1. he attempt to cast #oubt one*olution.

!. he h$pothesis that empiricale*i#ence eists that the uni*erse as#esine# supernaturall$ an# #i# nothappen naturall$.

2. he reliious con*iction that thenatural processes of the uni*ersemust ha*e been #esine#.


21/32


$th L!B here are #oubts about e*olution.

7ealit$B t is the most basic assumption ofall biolo$.

1. t is not @ust a theor$.!. >enetic utation is an obser*able fact.

2. Selection is an obser*able fact.

4. hat >enetic utation an# Selectioncan pro#uce ne species is anobser*able fact.

5. t is not @ust sur*i*al of the fittest.


22/32

$th L2B mpirical e*i#ence eists that theuni*erse as #esine#.

7ealit$B he aruments cannot be base# onempirical e*i#ence.

1. ?atch-!!. :ne coul# arue it both a$sB iflife is unliel$ then it taes the supernaturalto eplain it. f it is liel$, then the uni*erseas #esine# to ha*e life.

!. 3ielihoo# aruments assume that e nothe intentions of the #esiner. his becomescircular.

2. 3ielihoo# aruments assume e no theprobabilit$ space of the parameters that o

into #esinin a uni*erse.



23/32

$th L4B )elief in ntellient Eesin an#*olution are mutuall$ eclusi*e.

7ealit$B an$ fols belie*e both.

*olution is base# on ph$sical e*i#encealone. ntellient Eesin oes be$on#the ph$sical e*i#ence, an# science alonecan neither confirm nor refute it.

hus there is no contra#iction in belie*inthat *olution (or >ra*itation or Guantumlectro#$namics" coul# ha*e been#esine# to be the a$ it is.


more info atBhttpBCC.mrmont.comCi#csie*eCempirical#oubts.html
http://www.mrmont.com/idcsieve/empiricaldoubts.htmlhttp://www.mrmont.com/idcsieve/empiricaldoubts.htmlhttp://www.mrmont.com/idcsieve/empiricaldoubts.html


24/32

nternational Protocols

he$ can or.

?ase in pointB he oJone la$er is noloner thinnin an# ma$ ha*e

impro*e# at mi#latitu#es

source: Chemical & Engineering News, $eptember !, 2!, p. "%


25/32

>lobal &arminSome ha*e arue# that the arth is not

armin, an# e*en if it is, it is a naturalprocess.

'lthouh there as some #oubt a #eca#e ao,

there is no #oubt no that the arth isarmin up.

9urthermore, recent statistical anal$sis no

shos that it is almost certainl$ our burninof fossil fuels that is the cause.

Here is some #ata from @ournals rea#...


26/32

>lobal &armin >lobal a*erae surface air temperature rise since 1%%B

1.!M to !.4M 9 (all metho#s of measurement aree" ith afurther increase of !.5M to 1%.4M 9 epecte# b$ the en# of

the centur$.

he 11 armest $ears since instrumental recor#s ha*e

been ept ha*e all occurre# since 1%.

he armin obser*e# in the +orthern Hemisphere hasbeen reater than an$ other #urin the past 1%%% $rs.

ncrease# clou# co*er an# precipitation has been

obser*e# at the mi# to hih latitu#es in the +orthern

Hemisphere, as ell as #ecreases in precipitation in the

subtropics. Sea le*els are up 1% to !% cm from thermal epansion

an# meltin laciers.

'rctic temperatures ha*e risen faster than an$here on

the planet; perennial ice is #ecreasin at a rate of 2I

per #eca#e. $ource: &Climate Change' Chemical ( )ngineering News, *ecember "!, 2%


27/32

>lobal &armin

he arth is no absorbin %.85 N %.15

&Cm!more ener$ from the sun than it

is emittin, accor#in to precise

measurements of ocean heat contento*er the last 1% $rs.

Eue to the thermal inertia of the

oceans, #rasticall$ re#ucin ?:!emissions to#a$ ill not result in are*ersal of the armin for some time.

$ource:

&)arth+s )nergy mbalance: Confirmation and mplications'

$cience-press.org online version of Science April 28, 2!


28/32

>lobal &armin1. Precise ocean temperature

measurements ha*e rule# out solar

*ariabilit$ an# *olcanic eruptions as

causes of the armin.

!. he same rise in ocean temperatureis accuratel$ pre#icte# b$ climate

mo#els hich assume human

enerate# ?:!forcin.

$ource:

&0enetration of 1umannduced 3arming into the 3orld+s 4ceans'

$cience-press.org online version of Science 5une 2, 2!


29/32

>lobal &armin

7api# climate chane is possible,accor#in to both eoloical

recor#s an# climate mo#els.

7api# coul# mean #eca#es.

he +orth

'tlantic

?irculation


30/32

>enetics of $e ?olor

he ol# mo#el ha# onl$ oneene ith to allelesB blue(recessi*e" an# bron(#ominant".

he current mo#el assumesto enesB ) ! ith toallelesB bron an# blue, an#

> ith to allelesB bluean# reen.

)ron is #ominant o*er reen

hich is #ominant o*er blue.


31/32

>enetics of $e ?olor

here is simulation of the mo#el

online at http://www.athro.com/evo/gen/genefr2.html

he current mo#el cannot account for

haJel, ra$, or sha#es of bron,

thouh.

ore info atB

http://www.seps.org/cvoracle/fa9/eyecolor.html
http://www.athro.com/evo/gen/genefr2.htmlhttp://www.seps.org/cvoracle/faq/eyecolor.htmlhttp://www.seps.org/cvoracle/faq/eyecolor.htmlhttp://www.athro.com/evo/gen/genefr2.html


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mcs ta science misconceptions

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